strongswan-5.6.1 ---------------- - In compliance with RFCs 8221 and 8247 several algorithms were removed from the default ESP/AH and IKEv2 proposals, respectively (3DES, Blowfish and MD5 from ESP/AH, MD5 and MODP-1024 from IKEv2). These algorithms may still be used in custom proposals. - Added support for RSASSA-PSS signatures. For backwards compatibility they are not used automatically by default, enable charon.rsa_pss to change that. To explicitly use or require such signatures with IKEv2 signature authentication (RFC 7427), regardless of whether that option is enabled, use ike:rsa/pss... authentication constraints. - The pki tool can optionally sign certificates/CRLs with RSASSA-PSS via the `--rsa-padding pss` option. - The sec-updater tool checks for security updates in dpkg-based repositories (e.g. Debian/Ubuntu) and sets the security flags in the IMV policy database accordingly. Additionally for each new package version a SWID tag for the given OS and HW architecture is created and stored in the database. Using the sec-updater.sh script template the lookup can be automated (e.g. via an hourly cron job). - The introduction of file versions in the IMV database scheme broke file reference hash measurements. This has been fixed by creating generic product versions having an empty package name. - A new timeout option for the systime-fix plugin stops periodic system time checks after a while and enforces a certificate verification, closing or reauthenticating all SAs with invalid certificates. - The IKE event counters, previously only available via ipsec listcounters, may now be queried/reset via vici and the new swanctl --counters command. They are provided by the new optional counters plugin. - Class attributes received in RADIUS Access-Accept messages may optionally be added to RADIUS accounting messages. - Inbound marks may optionally be installed on the SA again (was removed with 5.5.2) by enabling the mark_in_sa option in swanctl.conf. strongswan-5.6.0 ---------------- - Fixed a DoS vulnerability in the gmp plugin that was caused by insufficient input validation when verifying RSA signatures, which requires decryption with the operation m^e mod n, where m is the signature, and e and n are the exponent and modulus of the public key. The value m is an integer between 0 and n-1, however, the gmp plugin did not verify this. So if m equals n the calculation results in 0, in which case mpz_export() returns NULL. This result wasn't handled properly causing a null-pointer dereference. This vulnerability has been registered as CVE-2017-11185. - New SWIMA IMC/IMV pair implements the "draft-ietf-sacm-nea-swima-patnc" Internet Draft and has been demonstrated at the IETF 99 Prague Hackathon. - The IMV database template has been adapted to achieve full compliance with the ISO 19770-2:2015 SWID tag standard. - The sw-collector tool extracts software events from apt history logs and stores them in an SQLite database to be used by the SWIMA IMC. The tool can also generate SWID tags both for installed and removed package versions. - The pt-tls-client can attach and use TPM 2.0 protected private keys via the --keyid parameter. - libtpmtss supports Intel's TSS2 Architecture Broker and Resource Manager interface (tcti-tabrmd). - The new eap-aka-3gpp plugin implements the 3GPP MILENAGE algorithms in software. K (optionally concatenated with OPc) may be configured as binary EAP secret. - CHILD_SA rekeying was fixed in charon-tkm and was slightly changed: The switch to the new outbound IPsec SA now happens via SPI on the outbound policy on Linux, and in case of lost rekey collisions no outbound SA/policy is temporarily installed for the redundant CHILD_SA. - The new %unique-dir value for mark* settings allocates separate unique marks for each CHILD_SA direction (in/out). strongswan-5.5.3 ---------------- - Fixed a DoS vulnerability in the gmp plugin that was caused by insufficient input validation when verifying RSA signatures. More specifically, mpz_powm_sec() has two requirements regarding the passed exponent and modulus that the plugin did not enforce, if these are not met the calculation will result in a floating point exception that crashes the whole process. This vulnerability has been registered as CVE-2017-9022. - Fixed a DoS vulnerability in the x509 plugin that was caused because the ASN.1 parser didn't handle ASN.1 CHOICE types properly, which could result in an infinite loop when parsing X.509 extensions that use such types. This vulnerability has been registered as CVE-2017-9023. - The behavior during IKEv2 CHILD_SA rekeying has been changed in order to avoid traffic loss. The responder now only installs the new inbound SA and delays installing the outbound SA until it receives the DELETE for the replaced CHILD_SA. Similarly, the inbound SA of the replaced CHILD_SA is not removed for a configurable amount of seconds (charon.delete_rekeyed_delay) after the DELETE has been processed to reduce the chance of dropping delayed packets. - The code base has been ported to Apple's ARM64 iOS platform, whose calling conventions for variadic and regular functions are different. This means assigning non-variadic functions to variadic function pointers does not work. To avoid this issue the enumerator_t interface has been changed and the signatures of the callback functions for enumerator_create_filter(), and the invoke_function() and find_first() methods on linked_list_t have been changed. The return type of find_first() also changed from status_t to bool. - Added support for fuzzing the certificate parser provided by the default plugins (x509, pem, gmp etc.) on Google's OSS-Fuzz infrastructure. Several issues found while fuzzing these plugins were fixed. - Two new options have been added to charon's retransmission settings: retransmit_limit and retransmit_jitter. The former adds an upper limit to the calculated retransmission timeout, the latter randomly reduces it. - A bug in swanctl's --load-creds command was fixed that caused unencrypted private keys to get unloaded if the command was called multiple times. The load-key VICI command now returns the key ID of the loaded key on success. - The credential manager now enumerates local credential sets before global ones. This means certificates supplied by the peer will now be preferred over certificates with the same identity that may be locally stored (e.g. in the certificate cache). - Added support for hardware offload of IPsec SAs as introduced by Linux 4.11 for hardware that supports this. - When building the libraries monolithically and statically the plugin constructors are now hard-coded in each library so the plugin code is not removed by the linker because it thinks none of their symbols are ever referenced. - The pki tool loads the curve25519 plugin by default. strongswan-5.5.2 ---------------- - Support of Diffie-Hellman group 31 using Curve25519 for IKE as defined by RFC 8031. - Support of Ed25519 digital signature algorithm for IKEv2 as defined by draft-ietf-ipsecme-eddsa. Ed25519-based public key pairs, X.509 certificates and CRLs can be generated and printed by the pki tool. - The new "tpm" libtpmtss plugin allows to use persistent private RSA and ECDSA keys bound to a TPM 2.0 for both IKE and TLS authentication. Using the TPM 2.0 object handle as keyid parameter, the pki --pub tool can extract the public key from the TPM thereby replacing the aikpub2 tool. In a similar fashion pki --req can generate a PKCS#10 certificate request signed with the TPM private key. - The pki tool gained support for generating certificates with the RFC 3779 addrblock extension. The charon addrblock plugin now dynamically narrows traffic selectors based on the certificate addrblocks instead of rejecting non-matching selectors completely. This allows generic connections, where the allowed selectors are defined by the used certificates only. - In-place update of cached base and delta CRLs does not leave dozens of stale copies in cache memory. - Several new features for the VICI interface and the swanctl utility: Querying specific pools, enumerating and unloading keys and shared secrets, loading keys and certificates from PKCS#11 tokens, the ability to initiate, install and uninstall connections and policies by their exact name (if multiple child sections in different connections share the same name), a command to initiate the rekeying of IKE and IPsec SAs, support for settings previously only supported by the old config files (plain pubkeys, dscp, certificate policies, IPv6 Transport Proxy Mode, NT Hash secrets, mediation extension). Important: Due to issues with VICI bindings that map sub-sections to dictionaries the CHILD_SA sections returned via list-sas now have a unique name, the original name of a CHILD_SA is returned in the "name" key of its section. strongswan-5.5.1 ---------------- - The newhope plugin implements the post-quantum NewHope key exchange algorithm proposed in their 2015 paper by Erdem Alkim, Léo Ducas, Thomas Pöppelmann and Peter Schwabe. - The libstrongswan crypto factory now offers the registration of Extended Output Functions (XOFs). Currently supported XOFs are SHAKE128 and SHAKE256 implemented by the sha3 plugin, ChaCHa20 implemented by the chapoly plugin and the more traditional MGF1 Mask Generation Functions based on the SHA-1, SHA-256 and SHA-512 hash algorithms implemented by the new mgf1 plugin. - The pki tool, with help of the pkcs1 or openssl plugins, can parse private keys in any of the supported formats without having to know the exact type. So instead of having to specify rsa or ecdsa explicitly the keyword priv may be used to indicate a private key of any type. Similarly, swanctl can load any type of private key from the swanctl/private directory. - The pki tool can handle RSASSA-PKCS1v1.5-with-SHA-3 signatures using the sha3 and gmp plugins. - The VICI flush-certs command flushes certificates from the volatile certificate cache. Optionally the type of the certificates to be flushed (e.g. type = x509_crl) can be specified. - Setting cache_crls = yes in strongswan.conf the vici plugin saves regular, base and delta CRLs to disk. - IKE fragmentation is now enabled by default with the default fragment size set to 1280 bytes for both IP address families. - libtpmtss: In the TSS2 API the function TeardownSocketTcti() was replaced by tss2_tcti_finalize(). strongswan-5.5.0 ---------------- - The new libtpmtss library offers support for both TPM 1.2 and TPM 2.0 Trusted Platform Modules. This allows the Attestation IMC/IMV pair to do TPM 2.0 based attestation. - The behavior during IKEv2 exchange collisions has been improved/fixed in several corner cases and support for TEMPORARY_FAILURE and CHILD_SA_NOT_FOUND notifies, as defined by RFC 7296, has been added. - IPsec policy priorities can be set manually (e.g. for high-priority drop policies) and outbound policies may be restricted to a network interface. - The scheme for the automatically calculated default priorities has been changed and now also considers port masks, which were added with 5.4.0. - FWD policies are now installed in both directions in regards to the traffic selectors. Because such "outbound" FWD policies could conflict with "inbound" FWD policies of other SAs they are installed with a lower priority and don't have a reqid set, which allows kernel plugins to distinguish between the two and prefer those with a reqid. - For outbound IPsec SAs no replay window is configured anymore. - Enhanced the functionality of the swanctl --list-conns command by listing IKE_SA and CHILD_SA reauthentication and rekeying settings, and EAP/XAuth identities and EAP types. - DNS servers installed by the resolve plugin are now refcounted, which should fix its use with make-before-break reauthentication. Any output written to stderr/stdout by resolvconf is now logged. - The methods in the kernel interfaces have been changed to take structs instead of long lists of arguments. Similarly the constructors for peer_cfg_t and child_cfg_t now take structs. strongswan-5.4.0 ---------------- - Support for IKEv2 redirection (RFC 5685) has been added. Plugins may implement the redirect_provider_t interface to decide if and when to redirect connecting clients. It is also possible to redirect established IKE_SAs based on different selectors via VICI/swanctl. Unless disabled in strongswan.conf the charon daemon will follow redirect requests received from servers. - The ike: prefix enables the explicit configuration of signature scheme constraints against IKEv2 authentication in rightauth, which allows the use of different signature schemes for trustchain verification and authentication. - The initiator of an IKEv2 make-before-break reauthentication now suspends online certificate revocation checks (OCSP, CRLs) until the new IKE_SA and all CHILD_SAs are established. This is required if the checks are done over the CHILD_SA established with the new IKE_SA. This is not possible until the initiator installs this SA and that only happens after the authentication is completed successfully. So we suspend the checks during the reauthentication and do them afterwards, if they fail the IKE_SA is closed. This change has no effect on the behavior during the authentication of the initial IKE_SA. - For the vici plugin a Vici:Session Perl CPAN module has been added to allow Perl applications to control and/or monitor the IKE daemon using the VICI interface, similar to the existing Python egg or Ruby gem. - Traffic selectors with port ranges can now be configured in the Linux kernel: e.g. remote_ts = 10.1.0.0/16[tcp/20-23] local_ts = dynamic[tcp/32768-65535]. The port range must map to a port mask, though since the kernel does not support arbitrary ranges. - The vici plugin allows the configuration of IPv4 and IPv6 address ranges in local and remote traffic selectors. Since both the Linux kernel and iptables cannot handle arbitrary ranges, address ranges are mapped to the next larger CIDR subnet by the kernel-netlink and updown plugins, respectively. - Implemented IKEv1 IPv4/IPv6 address subnet and range identities that can be used as owners of shared secrets. strongswan-5.3.5 ---------------- - Properly handle potential EINTR errors in sigwaitinfo(2) calls that replaced sigwait(3) calls with 5.3.4. - RADIUS retransmission timeouts are now configurable, courtesy of Thom Troy. strongswan-5.3.4 ---------------- - Fixed an authentication bypass vulnerability in the eap-mschapv2 plugin that was caused by insufficient verification of the internal state when handling MSCHAPv2 Success messages received by the client. This vulnerability has been registered as CVE-2015-8023. - The sha3 plugin implements the SHA3 Keccak-F1600 hash algorithm family. Within the strongSwan framework SHA3 is currently used for BLISS signatures only because the OIDs for other signature algorithms haven't been defined yet. Also the use of SHA3 for IKEv2 has not been standardized yet. strongswan-5.3.3 ---------------- - Added support for the ChaCha20/Poly1305 AEAD cipher specified in RFC 7539 and RFC 7634 using the chacha20poly1305 ike/esp proposal keyword. The new chapoly plugin implements the cipher, if possible SSE-accelerated on x86/x64 architectures. It is usable both in IKEv2 and the strongSwan libipsec ESP backend. On Linux 4.2 or newer the kernel-netlink plugin can configure the cipher for ESP SAs. - The vici interface now supports the configuration of auxiliary certification authority information as CRL and OCSP URIs. - In the bliss plugin the c_indices derivation using a SHA-512 based random oracle has been fixed, generalized and standardized by employing the MGF1 mask generation function with SHA-512. As a consequence BLISS signatures unsing the improved oracle are not compatible with the earlier implementation. - Support for auto=route with right=%any for transport mode connections has been added (the ikev2/trap-any scenario provides examples). - The starter daemon does not flush IPsec policies and SAs anymore when it is stopped. Already existing duplicate policies are now overwritten by the IKE daemon when it installs its policies. - Init limits (like charon.init_limit_half_open) can now optionally be enforced when initiating SAs via VICI. For this, IKE_SAs initiated by the daemon are now also counted as half-open SAs, which, as a side-effect, fixes the status output while connecting (e.g. in ipsec status). - Symmetric configuration of EAP methods in left|rightauth is now possible when mutual EAP-only authentication is used (previously, the client had to configure rightauth=eap or rightauth=any, which prevented it from using this same config as responder). - The initiator flag in the IKEv2 header is compared again (wasn't the case since 5.0.0) and packets that have the flag set incorrectly are again ignored. - Implemented a demo Hardcopy Device IMC/IMV pair based on the "Hardcopy Device Health Assessment Trusted Network Connect Binding" (HCD-TNC) document drafted by the IEEE Printer Working Group (PWG). - Fixed IF-M segmentation which failed in the presence of multiple small attributes in front of a huge attribute to be segmented. strongswan-5.3.2 ---------------- - Fixed a vulnerability that allowed rogue servers with a valid certificate accepted by the client to trick it into disclosing its username and even password (if the client accepts EAP-GTC). This was caused because constraints against the responder's authentication were enforced too late. This vulnerability has been registered as CVE-2015-4171. strongswan-5.3.1 ---------------- - Fixed a denial-of-service and potential remote code execution vulnerability triggered by IKEv1/IKEv2 messages that contain payloads for the respective other IKE version. Such payload are treated specially since 5.2.2 but because they were still identified by their original payload type they were used as such in some places causing invalid function pointer dereferences. The vulnerability has been registered as CVE-2015-3991. - The new aesni plugin provides CBC, CTR, XCBC, CMAC, CCM and GCM crypto primitives for AES-128/192/256. The plugin requires AES-NI and PCLMULQDQ instructions and works on both x86 and x64 architectures. It provides superior crypto performance in userland without any external libraries. strongswan-5.3.0 ---------------- - Added support for IKEv2 make-before-break reauthentication. By using a global CHILD_SA reqid allocation mechanism, charon supports overlapping CHILD_SAs. This allows the use of make-before-break instead of the previously supported break-before-make reauthentication, avoiding connectivity gaps during that procedure. As the new mechanism may fail with peers not supporting it (such as any previous strongSwan release) it must be explicitly enabled using the charon.make_before_break strongswan.conf option. - Support for "Signature Authentication in IKEv2" (RFC 7427) has been added. This allows the use of stronger hash algorithms for public key authentication. By default, signature schemes are chosen based on the strength of the signature key, but specific hash algorithms may be configured in leftauth. - Key types and hash algorithms specified in rightauth are now also checked against IKEv2 signature schemes. If such constraints are used for certificate chain validation in existing configurations, in particular with peers that don't support RFC 7427, it may be necessary to disable this feature with the charon.signature_authentication_constraints setting, because the signature scheme used in classic IKEv2 public key authentication may not be strong enough. - The new connmark plugin allows a host to bind conntrack flows to a specific CHILD_SA by applying and restoring the SA mark to conntrack entries. This allows a peer to handle multiple transport mode connections coming over the same NAT device for client-initiated flows. A common use case is to protect L2TP/IPsec, as supported by some systems. - The forecast plugin can forward broadcast and multicast messages between connected clients and a LAN. For CHILD_SA using unique marks, it sets up the required Netfilter rules and uses a multicast/broadcast listener that forwards such messages to all connected clients. This plugin is designed for Windows 7 IKEv2 clients, which announces its services over the tunnel if the negotiated IPsec policy allows it. - For the vici plugin a Python Egg has been added to allow Python applications to control or monitor the IKE daemon using the VICI interface, similar to the existing ruby gem. The Python library has been contributed by Björn Schuberg. - EAP server methods now can fulfill public key constraints, such as rightcert or rightca. Additionally, public key and signature constraints can be specified for EAP methods in the rightauth keyword. Currently the EAP-TLS and EAP-TTLS methods provide verification details to constraints checking. - Upgrade of the BLISS post-quantum signature algorithm to the improved BLISS-B variant. Can be used in conjunction with the SHA256, SHA384 and SHA512 hash algorithms with SHA512 being the default. - The IF-IMV 1.4 interface now makes the IP address of the TNC access requestor as seen by the TNC server available to all IMVs. This information can be forwarded to policy enforcement points (e.g. firewalls or routers). - The new mutual tnccs-20 plugin parameter activates mutual TNC measurements in PB-TNC half-duplex mode between two endpoints over either a PT-EAP or PT-TLS transport medium. strongswan-5.2.2 ---------------- - Fixed a denial-of-service vulnerability triggered by an IKEv2 Key Exchange payload that contains the Diffie-Hellman group 1025. This identifier was used internally for DH groups with custom generator and prime. Because these arguments are missing when creating DH objects based on the KE payload an invalid pointer dereference occurred. This allowed an attacker to crash the IKE daemon with a single IKE_SA_INIT message containing such a KE payload. The vulnerability has been registered as CVE-2014-9221. - The left/rightid options in ipsec.conf, or any other identity in strongSwan, now accept prefixes to enforce an explicit type, such as email: or fqdn:. Note that no conversion is done for the remaining string, refer to ipsec.conf(5) for details. - The post-quantum Bimodal Lattice Signature Scheme (BLISS) can be used as an IKEv2 public key authentication method. The pki tool offers full support for the generation of BLISS key pairs and certificates. - Fixed mapping of integrity algorithms negotiated for AH via IKEv1. This could cause interoperability issues when connecting to older versions of charon. strongswan-5.2.1 ---------------- - The new charon-systemd IKE daemon implements an IKE daemon tailored for use with systemd. It avoids the dependency on ipsec starter and uses swanctl as configuration backend, building a simple and lightweight solution. It supports native systemd journal logging. - Support for IKEv2 fragmentation as per RFC 7383 has been added. Like IKEv1 fragmentation it can be enabled by setting fragmentation=yes in ipsec.conf. - Support of the TCG TNC IF-M Attribute Segmentation specification proposal. All attributes can be segmented. Additionally TCG/SWID Tag, TCG/SWID Tag ID and IETF/Installed Packages attributes can be processed incrementally on a per segment basis. - The new ext-auth plugin calls an external script to implement custom IKE_SA authorization logic, courtesy of Vyronas Tsingaras. - For the vici plugin a ruby gem has been added to allow ruby applications to control or monitor the IKE daemon. The vici documentation has been updated to include a description of the available operations and some simple examples using both the libvici C interface and the ruby gem. strongswan-5.2.0 ---------------- - strongSwan has been ported to the Windows platform. Using a MinGW toolchain, many parts of the strongSwan codebase run natively on Windows 7 / 2008 R2 and newer releases. charon-svc implements a Windows IKE service based on libcharon, the kernel-iph and kernel-wfp plugins act as networking and IPsec backend on the Windows platform. socket-win provides a native IKE socket implementation, while winhttp fetches CRL and OCSP information using the WinHTTP API. - The new vici plugin provides a Versatile IKE Configuration Interface for charon. Using the stable IPC interface, external applications can configure, control and monitor the IKE daemon. Instead of scripting the ipsec tool and generating ipsec.conf, third party applications can use the new interface for more control and better reliability. - Built upon the libvici client library, swanctl implements the first user of the VICI interface. Together with a swanctl.conf configuration file, connections can be defined, loaded and managed. swanctl provides a portable, complete IKE configuration and control interface for the command line. The first six swanctl example scenarios have been added. - The SWID IMV implements a JSON-based REST API which allows the exchange of SWID tags and Software IDs with the strongTNC policy manager. - The SWID IMC can extract all installed packages from the dpkg (Debian, Ubuntu, Linux Mint etc.), rpm (Fedora, RedHat, OpenSUSE, etc.), or pacman (Arch Linux, Manjaro, etc.) package managers, respectively, using the swidGenerator (https://github.com/strongswan/swidGenerator) which generates SWID tags according to the new ISO/IEC 19770-2:2014 standard. - All IMVs now share the access requestor ID, device ID and product info of an access requestor via a common imv_session object. - The Attestation IMC/IMV pair supports the IMA-NG measurement format introduced with the Linux 3.13 kernel. - The aikgen tool generates an Attestation Identity Key bound to a TPM. - Implemented the PT-EAP transport protocol (RFC 7171) for Trusted Network Connect. - The ipsec.conf replay_window option defines connection specific IPsec replay windows. Original patch courtesy of Zheng Zhong and Christophe Gouault from 6Wind. strongswan-5.1.3 ---------------- - Fixed an authentication bypass vulnerability triggered by rekeying an unestablished IKEv2 SA while it gets actively initiated. This allowed an attacker to trick a peer's IKE_SA state to established, without the need to provide any valid authentication credentials. The vulnerability has been registered as CVE-2014-2338. - The acert plugin evaluates X.509 Attribute Certificates. Group membership information encoded as strings can be used to fulfill authorization checks defined with the rightgroups option. Attribute Certificates can be loaded locally or get exchanged in IKEv2 certificate payloads. - The pki command gained support to generate X.509 Attribute Certificates using the --acert subcommand, while the --print command supports the ac type. The openac utility has been removed in favor of the new pki functionality. - The libtls TLS 1.2 implementation as used by EAP-(T)TLS and other protocols has been extended by AEAD mode support, currently limited to AES-GCM. strongswan-5.1.2 ---------------- - A new default configuration file layout is introduced. The new default strongswan.conf file mainly includes config snippets from the strongswan.d and strongswan.d/charon directories (the latter containing snippets for all plugins). The snippets, with commented defaults, are automatically generated and installed, if they don't exist yet. They are also installed in $prefix/share/strongswan/templates so existing files can be compared to the current defaults. - As an alternative to the non-extensible charon.load setting, the plugins to load in charon (and optionally other applications) can now be determined via the charon.plugins..load setting for each plugin (enabled in the new default strongswan.conf file via the charon.load_modular option). The load setting optionally takes a numeric priority value that allows reordering the plugins (otherwise the default plugin order is preserved). - All strongswan.conf settings that were formerly defined in library specific "global" sections are now application specific (e.g. settings for plugins in libstrongswan.plugins can now be set only for charon in charon.plugins). The old options are still supported, which now allows to define defaults for all applications in the libstrongswan section. - The ntru libstrongswan plugin supports NTRUEncrypt as a post-quantum computer IKE key exchange mechanism. The implementation is based on the ntru-crypto library from the NTRUOpenSourceProject. The supported security strengths are ntru112, ntru128, ntru192, and ntru256. Since the private DH group IDs 1030..1033 have been assigned, the strongSwan Vendor ID must be sent (charon.send_vendor_id = yes) in order to use NTRU. - Defined a TPMRA remote attestation workitem and added support for it to the Attestation IMV. - Compatibility issues between IPComp (compress=yes) and leftfirewall=yes as well as multiple subnets in left|rightsubnet have been fixed. - When enabling its "session" strongswan.conf option, the xauth-pam plugin opens and closes a PAM session for each established IKE_SA. Patch courtesy of Andrea Bonomi. - The strongSwan unit testing framework has been rewritten without the "check" dependency for improved flexibility and portability. It now properly supports multi-threaded and memory leak testing and brings a bunch of new test cases. strongswan-5.1.1 ---------------- - Fixed a denial-of-service vulnerability and potential authorization bypass triggered by a crafted ID_DER_ASN1_DN ID payload. The cause is an insufficient length check when comparing such identities. The vulnerability has been registered as CVE-2013-6075. - Fixed a denial-of-service vulnerability triggered by a crafted IKEv1 fragmentation payload. The cause is a NULL pointer dereference. The vulnerability has been registered as CVE-2013-6076. - The lean stand-alone pt-tls-client can set up a RFC 6876 PT-TLS session with a strongSwan policy enforcement point which uses the tnc-pdp charon plugin. - The new TCG TNC SWID IMC/IMV pair supports targeted SWID requests for either full SWID Tag or concise SWID Tag ID inventories. - The XAuth backend in eap-radius now supports multiple XAuth exchanges for different credential types and display messages. All user input gets concatenated and verified with a single User-Password RADIUS attribute on the AAA. With an AAA supporting it, one for example can implement Password+Token authentication with proper dialogs on iOS and OS X clients. - charon supports IKEv1 Mode Config exchange in push mode. The ipsec.conf modeconfig=push option enables it for both client and server, the same way as pluto used it. - Using the "ah" ipsec.conf keyword on both IKEv1 and IKEv2 connections, charon can negotiate and install Security Associations integrity-protected by the Authentication Header protocol. Supported are plain AH(+IPComp) SAs only, but not the deprecated RFC2401 style ESP+AH bundles. - The generation of initialization vectors for IKE and ESP (when using libipsec) is now modularized and IVs for e.g. AES-GCM are now correctly allocated sequentially, while other algorithms like AES-CBC still use random IVs. - The left and right options in ipsec.conf can take multiple address ranges and subnets. This allows connection matching against a larger set of addresses, for example to use a different connection for clients connecting from a internal network. - For all those who have a queasy feeling about the NIST elliptic curve set, the Brainpool curves introduced for use with IKE by RFC 6932 might be a more trustworthy alternative. - The kernel-libipsec userland IPsec backend now supports usage statistics, volume based rekeying and accepts ESPv3 style TFC padded packets. - With two new strongswan.conf options fwmarks can be used to implement host-to-host tunnels with kernel-libipsec. - load-tester supports transport mode connections and more complex traffic selectors, including such using unique ports for each tunnel. - The new dnscert plugin provides support for authentication via CERT RRs that are protected via DNSSEC. The plugin was created by Ruslan N. Marchenko. - The eap-radius plugin supports forwarding of several Cisco Unity specific RADIUS attributes in corresponding configuration payloads. - Database transactions are now abstracted and implemented by the two backends. If you use MySQL make sure all tables use the InnoDB engine. - libstrongswan now can provide an experimental custom implementation of the printf family functions based on klibc if neither Vstr nor glibc style printf hooks are available. This can avoid the Vstr dependency on some systems at the cost of slower and less complete printf functions. strongswan-5.1.0 ---------------- - Fixed a denial-of-service vulnerability triggered by specific XAuth usernames and EAP identities (since 5.0.3), and PEM files (since 4.1.11). The crash was caused by insufficient error handling in the is_asn1() function. The vulnerability has been registered as CVE-2013-5018. - The new charon-cmd command line IKE client can establish road warrior connections using IKEv1 or IKEv2 with different authentication profiles. It does not depend on any configuration files and can be configured using a few simple command line options. - The kernel-pfroute networking backend has been greatly improved. It now can install virtual IPs on TUN devices on OS X and FreeBSD, allowing these systems to act as a client in common road warrior scenarios. - The new kernel-libipsec plugin uses TUN devices and libipsec to provide IPsec processing in userland on Linux, FreeBSD and Mac OS X. - The eap-radius plugin can now serve as an XAuth backend called xauth-radius, directly verifying XAuth credentials using RADIUS User-Name/User-Password attributes. This is more efficient than the existing xauth-eap+eap-radius combination, and allows RADIUS servers without EAP support to act as AAA backend for IKEv1. - The new osx-attr plugin installs configuration attributes (currently DNS servers) via SystemConfiguration on Mac OS X. The keychain plugin provides certificates from the OS X keychain service. - The sshkey plugin parses SSH public keys, which, together with the --agent option for charon-cmd, allows the use of ssh-agent for authentication. To configure SSH keys in ipsec.conf the left|rightrsasigkey options are replaced with left|rightsigkey, which now take public keys in one of three formats: SSH (RFC 4253, ssh: prefix), DNSKEY (RFC 3110, dns: prefix), and PKCS#1 (the default, no prefix). - Extraction of certificates and private keys from PKCS#12 files is now provided by the new pkcs12 plugin or the openssl plugin. charon-cmd (--p12) as well as charon (via P12 token in ipsec.secrets) can make use of this. - IKEv2 can now negotiate transport mode and IPComp in NAT situations. - IKEv2 exchange initiators now properly close an established IKE or CHILD_SA on error conditions using an additional exchange, keeping state in sync between peers. - Using a SQL database interface a Trusted Network Connect (TNC) Policy Manager can generate specific measurement workitems for an arbitrary number of Integrity Measurement Verifiers (IMVs) based on the history of the VPN user and/or device. - Several core classes in libstrongswan are now tested with unit tests. These can be enabled with --enable-unit-tests and run with 'make check'. Coverage reports can be generated with --enable-coverage and 'make coverage' (this disables any optimization, so it should not be enabled when building production releases). - The leak-detective developer tool has been greatly improved. It works much faster/stabler with multiple threads, does not use deprecated malloc hooks anymore and has been ported to OS X. - chunk_hash() is now based on SipHash-2-4 with a random key. This provides better distribution and prevents hash flooding attacks when used with hashtables. - All default plugins implement the get_features() method to define features and their dependencies. The plugin loader has been improved, so that plugins in a custom load statement can be ordered freely or to express preferences without being affected by dependencies between plugin features. - A centralized thread can take care for watching multiple file descriptors concurrently. This removes the need for a dedicated listener threads in various plugins. The number of "reserved" threads for such tasks has been reduced to about five, depending on the plugin configuration. - Plugins that can be controlled by a UNIX socket IPC mechanism gained network transparency. Third party applications querying these plugins now can use TCP connections from a different host. - libipsec now supports AES-GCM. strongswan-5.0.4 ---------------- - Fixed a security vulnerability in the openssl plugin which was reported by Kevin Wojtysiak. The vulnerability has been registered as CVE-2013-2944. Before the fix, if the openssl plugin's ECDSA signature verification was used, due to a misinterpretation of the error code returned by the OpenSSL ECDSA_verify() function, an empty or zeroed signature was accepted as a legitimate one. - The handling of a couple of other non-security relevant openssl return codes was fixed as well. - The tnc_ifmap plugin now publishes virtual IPv4 and IPv6 addresses via its TCG TNC IF-MAP 2.1 interface. - The charon.initiator_only option causes charon to ignore IKE initiation requests. - The openssl plugin can now use the openssl-fips library. strongswan-5.0.3 ---------------- - The new ipseckey plugin enables authentication based on trustworthy public keys stored as IPSECKEY resource records in the DNS and protected by DNSSEC. To do so it uses a DNSSEC enabled resolver, like the one provided by the new unbound plugin, which is based on libldns and libunbound. Both plugins were created by Reto Guadagnini. - Implemented the TCG TNC IF-IMV 1.4 draft making access requestor identities available to an IMV. The OS IMV stores the AR identity together with the device ID in the attest database. - The openssl plugin now uses the AES-NI accelerated version of AES-GCM if the hardware supports it. - The eap-radius plugin can now assign virtual IPs to IKE clients using the Framed-IP-Address attribute by using the "%radius" named pool in the rightsourceip ipsec.conf option. Cisco Banner attributes are forwarded to Unity-capable IKEv1 clients during mode config. charon now sends Interim Accounting updates if requested by the RADIUS server, reports sent/received packets in Accounting messages, and adds a Terminate-Cause to Accounting-Stops. - The recently introduced "ipsec listcounters" command can report connection specific counters by passing a connection name, and global or connection counters can be reset by the "ipsec resetcounters" command. - The strongSwan libpttls library provides an experimental implementation of PT-TLS (RFC 6876), a Posture Transport Protocol over TLS. - The charon systime-fix plugin can disable certificate lifetime checks on embedded systems if the system time is obviously out of sync after bootup. Certificates lifetimes get checked once the system time gets sane, closing or reauthenticating connections using expired certificates. - The "ikedscp" ipsec.conf option can set DiffServ code points on outgoing IKE packets. - The new xauth-noauth plugin allows to use basic RSA or PSK authentication with clients that cannot be configured without XAuth authentication. The plugin simply concludes the XAuth exchange successfully without actually performing any authentication. Therefore, to use this backend it has to be selected explicitly with rightauth2=xauth-noauth. - The new charon-tkm IKEv2 daemon delegates security critical operations to a separate process. This has the benefit that the network facing daemon has no knowledge of keying material used to protect child SAs. Thus subverting charon-tkm does not result in the compromise of cryptographic keys. The extracted functionality has been implemented from scratch in a minimal TCB (trusted computing base) in the Ada programming language. Further information can be found at http://www.codelabs.ch/tkm/. strongswan-5.0.2 ---------------- - Implemented all IETF Standard PA-TNC attributes and an OS IMC/IMV pair using them to transfer operating system information. - The new "ipsec listcounters" command prints a list of global counter values about received and sent IKE messages and rekeyings. - A new lookip plugin can perform fast lookup of tunnel information using a clients virtual IP and can send notifications about established or deleted tunnels. The "ipsec lookip" command can be used to query such information or receive notifications. - The new error-notify plugin catches some common error conditions and allows an external application to receive notifications for them over a UNIX socket. - IKE proposals can now use a PRF algorithm different to that defined for integrity protection. If an algorithm with a "prf" prefix is defined explicitly (such as prfsha1 or prfsha256), no implicit PRF algorithm based on the integrity algorithm is added to the proposal. - The pkcs11 plugin can now load leftcert certificates from a smartcard for a specific ipsec.conf conn section and cacert CA certificates for a specific ca section. - The load-tester plugin gained additional options for certificate generation and can load keys and multiple CA certificates from external files. It can install a dedicated outer IP address for each tunnel and tunnel initiation batches can be triggered and monitored externally using the "ipsec load-tester" tool. - PKCS#7 container parsing has been modularized, and the openssl plugin gained an alternative implementation to decrypt and verify such files. In contrast to our own DER parser, OpenSSL can handle BER files, which is required for interoperability of our scepclient with EJBCA. - Support for the proprietary IKEv1 fragmentation extension has been added. Fragments are always handled on receipt but only sent if supported by the peer and if enabled with the new fragmentation ipsec.conf option. - IKEv1 in charon can now parse certificates received in PKCS#7 containers and supports NAT traversal as used by Windows clients. Patches courtesy of Volker Rümelin. - The new rdrand plugin provides a high quality / high performance random source using the Intel rdrand instruction found on Ivy Bridge processors. - The integration test environment was updated and now uses KVM and reproducible guest images based on Debian. strongswan-5.0.1 ---------------- - Introduced the sending of the standard IETF Assessment Result PA-TNC attribute by all strongSwan Integrity Measurement Verifiers. - Extended PTS Attestation IMC/IMV pair to provide full evidence of the Linux IMA measurement process. All pertinent file information of a Linux OS can be collected and stored in an SQL database. - The PA-TNC and PB-TNC protocols can now process huge data payloads >64 kB by distributing PA-TNC attributes over multiple PA-TNC messages and these messages over several PB-TNC batches. As long as no consolidated recommandation from all IMVs can be obtained, the TNC server requests more client data by sending an empty SDATA batch. - The rightgroups2 ipsec.conf option can require group membership during a second authentication round, for example during XAuth authentication against a RADIUS server. - The xauth-pam backend can authenticate IKEv1 XAuth and Hybrid authenticated clients against any PAM service. The IKEv2 eap-gtc plugin does not use PAM directly anymore, but can use any XAuth backend to verify credentials, including xauth-pam. - The new unity plugin brings support for some parts of the IKEv1 Cisco Unity Extension. As client, charon narrows traffic selectors to the received Split-Include attributes and automatically installs IPsec bypass policies for received Local-LAN attributes. As server, charon sends Split-Include attributes for leftsubnet definitions containing multiple subnets to Unity- aware clients. - An EAP-Nak payload is returned by clients if the gateway requests an EAP method that the client does not support. Clients can also request a specific EAP method by configuring that method with leftauth. - The eap-dynamic plugin handles EAP-Nak payloads returned by clients and uses these to select a different EAP method supported/requested by the client. The plugin initially requests the first registered method or the first method configured with charon.plugins.eap-dynamic.preferred. - The new left/rightdns options specify connection specific DNS servers to request/respond in IKEv2 configuration payloads or IKEv2 mode config. leftdns can be any (comma separated) combination of %config4 and %config6 to request multiple servers, both for IPv4 and IPv6. rightdns takes a list of DNS server IP addresses to return. - The left/rightsourceip options now accept multiple addresses or pools. leftsourceip can be any (comma separated) combination of %config4, %config6 or fixed IP addresses to request. rightsourceip accepts multiple explicitly specified or referenced named pools. - Multiple connections can now share a single address pool when they use the same definition in one of the rightsourceip pools. - The options charon.interfaces_ignore and charon.interfaces_use allow one to configure the network interfaces used by the daemon. - The kernel-netlink plugin supports the charon.install_virtual_ip_on option, which specifies the interface on which virtual IP addresses will be installed. If it is not specified the current behavior of using the outbound interface is preserved. - The kernel-netlink plugin tries to keep the current source address when looking for valid routes to reach other hosts. - The autotools build has been migrated to use a config.h header. strongSwan development headers will get installed during "make install" if --with-dev-headers has been passed to ./configure. - All crypto primitives gained return values for most operations, allowing crypto backends to fail, for example when using hardware accelerators. strongswan-5.0.0 ---------------- - The charon IKE daemon gained experimental support for the IKEv1 protocol. Pluto has been removed from the 5.x series, and unless strongSwan is configured with --disable-ikev1 or --disable-ikev2, charon handles both keying protocols. The feature-set of IKEv1 in charon is almost on par with pluto, but currently does not support AH or bundled AH+ESP SAs. Beside RSA/ECDSA, PSK and XAuth, charon also supports the Hybrid authentication mode. Information for interoperability and migration is available at http://wiki.strongswan.org/projects/strongswan/wiki/CharonPlutoIKEv1. - Charon's bus_t has been refactored so that loggers and other listeners are now handled separately. The single lock was previously cause for deadlocks if extensive listeners, such as the one provided by the updown plugin, wanted to acquire locks that were held by other threads which in turn tried to log messages, and thus were waiting to acquire the same lock currently held by the thread calling the listener. The implemented changes also allow the use of a read/write-lock for the loggers which increases performance if multiple loggers are registered. Besides several interface changes this last bit also changes the semantics for loggers as these may now be called by multiple threads at the same time. - Source routes are reinstalled if interfaces are reactivated or IP addresses reappear. - The thread pool (processor_t) now has more control over the lifecycle of a job (see job.h for details). In particular, it now controls the destruction of jobs after execution and the cancellation of jobs during shutdown. Due to these changes the requeueing feature, previously available to callback_job_t only, is now available to all jobs (in addition to a new rescheduling feature). - In addition to trustchain key strength definitions for different public key systems, the rightauth option now takes a list of signature hash algorithms considered save for trustchain validation. For example, the setting rightauth=rsa-2048-ecdsa-256-sha256-sha384-sha512 requires a trustchain that uses at least RSA-2048 or ECDSA-256 keys and certificate signatures using SHA-256 or better. strongswan-4.6.4 ---------------- - Fixed a security vulnerability in the gmp plugin. If this plugin was used for RSA signature verification an empty or zeroed signature was handled as a legitimate one. - Fixed several issues with reauthentication and address updates. strongswan-4.6.3 ---------------- - The tnc-pdp plugin implements a RADIUS server interface allowing a strongSwan TNC server to act as a Policy Decision Point. - The eap-radius authentication backend enforces Session-Timeout attributes using RFC4478 repeated authentication and acts upon RADIUS Dynamic Authorization extensions, RFC 5176. Currently supported are disconnect requests and CoA messages containing a Session-Timeout. - The eap-radius plugin can forward arbitrary RADIUS attributes from and to clients using custom IKEv2 notify payloads. The new radattr plugin reads attributes to include from files and prints received attributes to the console. - Added support for untruncated MD5 and SHA1 HMACs in ESP as used in RFC 4595. - The cmac plugin implements the AES-CMAC-96 and AES-CMAC-PRF-128 algorithms as defined in RFC 4494 and RFC 4615, respectively. - The resolve plugin automatically installs nameservers via resolvconf(8), if it is installed, instead of modifying /etc/resolv.conf directly. - The IKEv2 charon daemon supports now raw RSA public keys in RFC 3110 DNSKEY and PKCS#1 file format. strongswan-4.6.2 ---------------- - Upgraded the TCG IF-IMC and IF-IMV C API to the upcoming version 1.3 which supports IF-TNCCS 2.0 long message types, the exclusive flags and multiple IMC/IMV IDs. Both the TNC Client and Server as well as the "Test", "Scanner", and "Attestation" IMC/IMV pairs were updated. - Fully implemented the "TCG Attestation PTS Protocol: Binding to IF-M" standard (TLV-based messages only). TPM-based remote attestation of Linux IMA (Integrity Measurement Architecture) possible. Measurement reference values are automatically stored in an SQLite database. - The EAP-RADIUS authentication backend supports RADIUS accounting. It sends start/stop messages containing Username, Framed-IP and Input/Output-Octets attributes and has been tested against FreeRADIUS and Microsoft NPS. - Added support for PKCS#8 encoded private keys via the libstrongswan pkcs8 plugin. This is the default format used by some OpenSSL tools since version 1.0.0 (e.g. openssl req with -keyout). - Added session resumption support to the strongSwan TLS stack. strongswan-4.6.1 ---------------- - Because of changing checksums before and after installation which caused the integrity tests to fail we avoided directly linking libsimaka, libtls and libtnccs to those libcharon plugins which make use of these dynamic libraries. Instead we linked the libraries to the charon daemon. Unfortunately Ubuntu 11.10 activated the --as-needed ld option which discards explicit links to dynamic libraries that are not actually used by the charon daemon itself, thus causing failures during the loading of the plugins which depend on these libraries for resolving external symbols. - Therefore our approach of computing integrity checksums for plugins had to be changed radically by moving the hash generation from the compilation to the post-installation phase. strongswan-4.6.0 ---------------- - The new libstrongswan certexpire plugin collects expiration information of all used certificates and exports them to CSV files. It either directly exports them or uses cron style scheduling for batch exports. - starter passes unresolved hostnames to charon, allowing it to do name resolution not before the connection attempt. This is especially useful with connections between hosts using dynamic IP addresses. Thanks to Mirko Parthey for the initial patch. - The android plugin can now be used without the Android frontend patch and provides DNS server registration and logging to logcat. - Pluto and starter (plus stroke and whack) have been ported to Android. - Support for ECDSA private and public key operations has been added to the pkcs11 plugin. The plugin now also provides DH and ECDH via PKCS#11 and can use tokens as random number generators (RNG). By default only private key operations are enabled, more advanced features have to be enabled by their option in strongswan.conf. This also applies to public key operations (even for keys not stored on the token) which were enabled by default before. - The libstrongswan plugin system now supports detailed plugin dependencies. Many plugins have been extended to export its capabilities and requirements. This allows the plugin loader to resolve plugin loading order automatically, and in future releases, to dynamically load the required features on demand. Existing third party plugins are source (but not binary) compatible if they properly initialize the new get_features() plugin function to NULL. - The tnc-ifmap plugin implements a TNC IF-MAP 2.0 client which can deliver metadata about IKE_SAs via a SOAP interface to a MAP server. The tnc-ifmap plugin requires the Apache Axis2/C library. strongswan-4.5.3 ---------------- - Our private libraries (e.g. libstrongswan) are not installed directly in prefix/lib anymore. Instead a subdirectory is used (prefix/lib/ipsec/ by default). The plugins directory is also moved from libexec/ipsec/ to that directory. - The dynamic IMC/IMV libraries were moved from the plugins directory to a new imcvs directory in the prefix/lib/ipsec/ subdirectory. - Job priorities were introduced to prevent thread starvation caused by too many threads handling blocking operations (such as CRL fetching). Refer to strongswan.conf(5) for details. - Two new strongswan.conf options allow to fine-tune performance on IKEv2 gateways by dropping IKE_SA_INIT requests on high load. - IKEv2 charon daemon supports start PASS and DROP shunt policies preventing traffic to go through IPsec connections. Installation of the shunt policies either via the XFRM netfilter or PFKEYv2 IPsec kernel interfaces. - The history of policies installed in the kernel is now tracked so that e.g. trap policies are correctly updated when reauthenticated SAs are terminated. - IMC/IMV Scanner pair implementing the RFC 5792 PA-TNC (IF-M) protocol. Using "netstat -l" the IMC scans open listening ports on the TNC client and sends a port list to the IMV which based on a port policy decides if the client is admitted to the network. (--enable-imc-scanner/--enable-imv-scanner). - IMC/IMV Test pair implementing the RFC 5792 PA-TNC (IF-M) protocol. (--enable-imc-test/--enable-imv-test). - The IKEv2 close action does not use the same value as the ipsec.conf dpdaction setting, but the value defined by its own closeaction keyword. The action is triggered if the remote peer closes a CHILD_SA unexpectedly. strongswan-4.5.2 ---------------- - The whitelist plugin for the IKEv2 daemon maintains an in-memory identity whitelist. Any connection attempt of peers not whitelisted will get rejected. The 'ipsec whitelist' utility provides a simple command line frontend for whitelist administration. - The duplicheck plugin provides a specialized form of duplicate checking, doing a liveness check on the old SA and optionally notify a third party application about detected duplicates. - The coupling plugin permanently couples two or more devices by limiting authentication to previously used certificates. - In the case that the peer config and child config don't have the same name (usually in SQL database defined connections), ipsec up|route starts|routes all associated child configs and ipsec up|route only starts|routes the specific child config. - fixed the encoding and parsing of X.509 certificate policy statements (CPS). - Duncan Salerno contributed the eap-sim-pcsc plugin implementing a pcsc-lite based SIM card backend. - The eap-peap plugin implements the EAP PEAP protocol. Interoperates successfully with a FreeRADIUS server and Windows 7 Agile VPN clients. - The IKEv2 daemon charon rereads strongswan.conf on SIGHUP and instructs all plugins to reload. Currently only the eap-radius and the attr plugins support configuration reloading. - Added userland support to the IKEv2 daemon for Extended Sequence Numbers support coming with Linux 2.6.39. To enable ESN on a connection, add the 'esn' keyword to the proposal. The default proposal uses 32-bit sequence numbers only ('noesn'), and the same value is used if no ESN mode is specified. To negotiate ESN support with the peer, include both, e.g. esp=aes128-sha1-esn-noesn. - In addition to ESN, Linux 2.6.39 gained support for replay windows larger than 32 packets. The new global strongswan.conf option 'charon.replay_window' configures the size of the replay window, in packets. strongswan-4.5.1 ---------------- - Sansar Choinyambuu implemented the RFC 5793 Posture Broker Protocol (BP) compatible with Trusted Network Connect (TNC). The TNCCS 2.0 protocol requires the tnccs_20, tnc_imc and tnc_imv plugins but does not depend on the libtnc library. Any available IMV/IMC pairs conforming to the Trusted Computing Group's TNC-IF-IMV/IMC 1.2 interface specification can be loaded via /etc/tnc_config. - Re-implemented the TNCCS 1.1 protocol by using the tnc_imc and tnc_imv in place of the external libtnc library. - The tnccs_dynamic plugin loaded on a TNC server in addition to the tnccs_11 and tnccs_20 plugins, dynamically detects the IF-TNCCS protocol version used by a TNC client and invokes an instance of the corresponding protocol stack. - IKE and ESP proposals can now be stored in an SQL database using a new proposals table. The start_action field in the child_configs tables allows the automatic starting or routing of connections stored in an SQL database. - The new certificate_authorities and certificate_distribution_points tables make it possible to store CRL and OCSP Certificate Distribution points in an SQL database. - The new 'include' statement allows to recursively include other files in strongswan.conf. Existing sections and values are thereby extended and replaced, respectively. - Due to the changes in the parser for strongswan.conf, the configuration syntax for the attr plugin has changed. Previously, it was possible to specify multiple values of a specific attribute type by adding multiple key/value pairs with the same key (e.g. dns) to the plugins.attr section. Because values with the same key now replace previously defined values this is not possible anymore. As an alternative, multiple values can be specified by separating them with a comma (e.g. dns = 1.2.3.4, 2.3.4.5). - ipsec listalgs now appends (set in square brackets) to each crypto algorithm listed the plugin that registered the function. - Traffic Flow Confidentiality padding supported with Linux 2.6.38 can be used by the IKEv2 daemon. The ipsec.conf 'tfc' keyword pads all packets to a given boundary, the special value '%mtu' pads all packets to the path MTU. - The new af-alg plugin can use various crypto primitives of the Linux Crypto API using the AF_ALG interface introduced with 2.6.38. This removes the need for additional userland implementations of symmetric cipher, hash, hmac and xcbc algorithms. - The IKEv2 daemon supports the INITIAL_CONTACT notify as initiator and responder. The notify is sent when initiating configurations with a unique policy, set in ipsec.conf via the global 'uniqueids' option. - The conftest conformance testing framework enables the IKEv2 stack to perform many tests using a distinct tool and configuration frontend. Various hooks can alter reserved bits, flags, add custom notifies and proposals, reorder or drop messages and much more. It is enabled using the --enable-conftest ./configure switch. - The new libstrongswan constraints plugin provides advanced X.509 constraint checking. In addition to X.509 pathLen constraints, the plugin checks for nameConstraints and certificatePolicies, including policyMappings and policyConstraints. The x509 certificate plugin and the pki tool have been enhanced to support these extensions. The new left/rightcertpolicy ipsec.conf connection keywords take OIDs a peer certificate must have. - The left/rightauth ipsec.conf keywords accept values with a minimum strength for trustchain public keys in bits, such as rsa-2048 or ecdsa-256. - The revocation and x509 libstrongswan plugins and the pki tool gained basic support for delta CRLs. strongswan-4.5.0 ---------------- - IMPORTANT: the default keyexchange mode 'ike' is changing with release 4.5 from 'ikev1' to 'ikev2', thus commemorating the five year anniversary of the IKEv2 RFC 4306 and its mature successor RFC 5996. The time has definitively come for IKEv1 to go into retirement and to cede its place to the much more robust, powerful and versatile IKEv2 protocol! - Added new ctr, ccm and gcm plugins providing Counter, Counter with CBC-MAC and Galois/Counter Modes based on existing CBC implementations. These new plugins bring support for AES and Camellia Counter and CCM algorithms and the AES GCM algorithms for use in IKEv2. - The new pkcs11 plugin brings full Smartcard support to the IKEv2 daemon and the pki utility using one or more PKCS#11 libraries. It currently supports RSA private and public key operations and loads X.509 certificates from tokens. - Implemented a general purpose TLS stack based on crypto and credential primitives of libstrongswan. libtls supports TLS versions 1.0, 1.1 and 1.2, ECDHE-ECDSA/RSA, DHE-RSA and RSA key exchange algorithms and RSA/ECDSA based client authentication. - Based on libtls, the eap-tls plugin brings certificate based EAP authentication for client and server. It is compatible to Windows 7 IKEv2 Smartcard authentication and the OpenSSL based FreeRADIUS EAP-TLS backend. - Implemented the TNCCS 1.1 Trusted Network Connect protocol using the libtnc library on the strongSwan client and server side via the tnccs_11 plugin and optionally connecting to a TNC@FHH-enhanced FreeRADIUS AAA server. Depending on the resulting TNC Recommendation, strongSwan clients are granted access to a network behind a strongSwan gateway (allow), are put into a remediation zone (isolate) or are blocked (none), respectively. Any number of Integrity Measurement Collector/Verifier pairs can be attached via the tnc-imc and tnc-imv charon plugins. - The IKEv1 daemon pluto now uses the same kernel interfaces as the IKEv2 daemon charon. As a result of this, pluto now supports xfrm marks which were introduced in charon with 4.4.1. - Applets for Maemo 5 (Nokia) allow to easily configure and control IKEv2 based VPN connections with EAP authentication on supported devices. - The RADIUS plugin eap-radius now supports multiple RADIUS servers for redundant setups. Servers are selected by a defined priority, server load and availability. - The simple led plugin controls hardware LEDs through the Linux LED subsystem. It currently shows activity of the IKE daemon and is a good example how to implement a simple event listener. - Improved MOBIKE behavior in several corner cases, for instance, if the initial responder moves to a different address. - Fixed left-/rightnexthop option, which was broken since 4.4.0. - Fixed a bug not releasing a virtual IP address to a pool if the XAUTH identity was different from the IKE identity. - Fixed the alignment of ModeConfig messages on 4-byte boundaries in the case where the attributes are not a multiple of 4 bytes (e.g. Cisco's UNITY_BANNER). - Fixed the interoperability of the socket_raw and socket_default charon plugins. - Added man page for strongswan.conf strongswan-4.4.1 ---------------- - Support of xfrm marks in IPsec SAs and IPsec policies introduced with the Linux 2.6.34 kernel. For details see the example scenarios ikev2/nat-two-rw-mark, ikev2/rw-nat-mark-in-out and ikev2/net2net-psk-dscp. - The PLUTO_MARK_IN and PLUTO_ESP_ENC environment variables can be used in a user-specific updown script to set marks on inbound ESP or ESP_IN_UDP packets. - The openssl plugin now supports X.509 certificate and CRL functions. - OCSP/CRL checking in IKEv2 has been moved to the revocation plugin, enabled by default. Plase update manual load directives in strongswan.conf. - RFC3779 ipAddrBlock constraint checking has been moved to the addrblock plugin, disabled by default. Enable it and update manual load directives in strongswan.conf, if required. - The pki utility supports CRL generation using the --signcrl command. - The ipsec pki --self, --issue and --req commands now support output in PEM format using the --outform pem option. - The major refactoring of the IKEv1 Mode Config functionality now allows the transport and handling of any Mode Config attribute. - The RADIUS proxy plugin eap-radius now supports multiple servers. Configured servers are chosen randomly, with the option to prefer a specific server. Non-responding servers are degraded by the selection process. - The ipsec pool tool manages arbitrary configuration attributes stored in an SQL database. ipsec pool --help gives the details. - The new eap-simaka-sql plugin acts as a backend for EAP-SIM and EAP-AKA, reading triplets/quintuplets from an SQL database. - The High Availability plugin now supports a HA enabled in-memory address pool and Node reintegration without IKE_SA rekeying. The latter allows clients without IKE_SA rekeying support to keep connected during reintegration. Additionally, many other issues have been fixed in the ha plugin. - Fixed a potential remote code execution vulnerability resulting from the misuse of snprintf(). The vulnerability is exploitable by unauthenticated users. strongswan-4.4.0 ---------------- - The IKEv2 High Availability plugin has been integrated. It provides load sharing and failover capabilities in a cluster of currently two nodes, based on an extend ClusterIP kernel module. More information is available at http://wiki.strongswan.org/projects/strongswan/wiki/HighAvailability. The development of the High Availability functionality was sponsored by secunet Security Networks AG. - Added IKEv1 and IKEv2 configuration support for the AES-GMAC authentication-only ESP cipher. Our aes_gmac kernel patch or a Linux 2.6.34 kernel is required to make AES-GMAC available via the XFRM kernel interface. - Added support for Diffie-Hellman groups 22, 23 and 24 to the gmp, gcrypt and openssl plugins, usable by both pluto and charon. The new proposal keywords are modp1024s160, modp2048s224 and modp2048s256. Thanks to Joy Latten from IBM for his contribution. - The IKEv1 pluto daemon supports RAM-based virtual IP pools using the rightsourceip directive with a subnet from which addresses are allocated. - The ipsec pki --gen and --pub commands now allow the output of private and public keys in PEM format using the --outform pem command line option. - The new DHCP plugin queries virtual IP addresses for clients from a DHCP server using broadcasts, or a defined server using the charon.plugins.dhcp.server strongswan.conf option. DNS/WINS server information is additionally served to clients if the DHCP server provides such information. The plugin is used in ipsec.conf configurations having rightsourceip set to %dhcp. - A new plugin called farp fakes ARP responses for virtual IP addresses handed out to clients from the IKEv2 daemon charon. The plugin lets a road-warrior act as a client on the local LAN if it uses a virtual IP from the responders subnet, e.g. acquired using the DHCP plugin. - The existing IKEv2 socket implementations have been migrated to the socket-default and the socket-raw plugins. The new socket-dynamic plugin binds sockets dynamically to ports configured via the left-/rightikeport ipsec.conf connection parameters. - The android charon plugin stores received DNS server information as "net.dns" system properties, as used by the Android platform. strongswan-4.3.6 ---------------- - The IKEv2 daemon supports RFC 3779 IP address block constraints carried as a critical X.509v3 extension in the peer certificate. - The ipsec pool --add|del dns|nbns command manages DNS and NBNS name server entries that are sent via the IKEv1 Mode Config or IKEv2 Configuration Payload to remote clients. - The Camellia cipher can be used as an IKEv1 encryption algorithm. - The IKEv1 and IKEV2 daemons now check certificate path length constraints. - The new ipsec.conf conn option "inactivity" closes a CHILD_SA if no traffic was sent or received within the given interval. To close the complete IKE_SA if its only CHILD_SA was inactive, set the global strongswan.conf option "charon.inactivity_close_ike" to yes. - More detailed IKEv2 EAP payload information in debug output - IKEv2 EAP-SIM and EAP-AKA share joint libsimaka library - Added required userland changes for proper SHA256 and SHA384/512 in ESP that will be introduced with Linux 2.6.33. The "sha256"/"sha2_256" keyword now configures the kernel with 128 bit truncation, not the non-standard 96 bit truncation used by previous releases. To use the old 96 bit truncation scheme, the new "sha256_96" proposal keyword has been introduced. - Fixed IPComp in tunnel mode, stripping out the duplicated outer header. This change makes IPcomp tunnel mode connections incompatible with previous releases; disable compression on such tunnels. - Fixed BEET mode connections on recent kernels by installing SAs with appropriate traffic selectors, based on a patch by Michael Rossberg. - Using extensions (such as BEET mode) and crypto algorithms (such as twofish, serpent, sha256_96) allocated in the private use space now require that we know its meaning, i.e. we are talking to strongSwan. Use the new "charon.send_vendor_id" option in strongswan.conf to let the remote peer know this is the case. - Experimental support for draft-eronen-ipsec-ikev2-eap-auth, where the responder omits public key authentication in favor of a mutual authentication method. To enable EAP-only authentication, set rightauth=eap on the responder to rely only on the MSK constructed AUTH payload. This not-yet standardized extension requires the strongSwan vendor ID introduced above. - The IKEv1 daemon ignores the Juniper SRX notification type 40001, thus allowing interoperability. strongswan-4.3.5 ---------------- - The IKEv1 pluto daemon can now use SQL-based address pools to deal out virtual IP addresses as a Mode Config server. The pool capability has been migrated from charon's sql plugin to a new attr-sql plugin which is loaded by libstrongswan and which can be used by both daemons either with a SQLite or MySQL database and the corresponding plugin. - Plugin names have been streamlined: EAP plugins now have a dash after eap (e.g. eap-sim), as it is used with the --enable-eap-sim ./configure option. Plugin configuration sections in strongswan.conf now use the same name as the plugin itself (i.e. with a dash). Make sure to update "load" directives and the affected plugin sections in existing strongswan.conf files. - The private/public key parsing and encoding has been split up into separate pkcs1, pgp, pem and dnskey plugins. The public key implementation plugins gmp, gcrypt and openssl can all make use of them. - The EAP-AKA plugin can use different backends for USIM/quintuplet calculations, very similar to the EAP-SIM plugin. The existing 3GPP2 software implementation has been migrated to a separate plugin. - The IKEv2 daemon charon gained basic PGP support. It can use locally installed peer certificates and can issue signatures based on RSA private keys. - The new 'ipsec pki' tool provides a set of commands to maintain a public key infrastructure. It currently supports operations to create RSA and ECDSA private/public keys, calculate fingerprints and issue or verify certificates. - Charon uses a monotonic time source for statistics and job queueing, behaving correctly if the system time changes (e.g. when using NTP). - In addition to time based rekeying, charon supports IPsec SA lifetimes based on processed volume or number of packets. They new ipsec.conf parameters 'lifetime' (an alias to 'keylife'), 'lifebytes' and 'lifepackets' handle SA timeouts, while the parameters 'margintime' (an alias to rekeymargin), 'marginbytes' and 'marginpackets' trigger the rekeying before a SA expires. The existing parameter 'rekeyfuzz' affects all margins. - If no CA/Gateway certificate is specified in the NetworkManager plugin, charon uses a set of trusted root certificates preinstalled by distributions. The directory containing CA certificates can be specified using the --with-nm-ca-dir=path configure option. - Fixed the encoding of the Email relative distinguished name in left|rightid statements. - Fixed the broken parsing of PKCS#7 wrapped certificates by the pluto daemon. - Fixed smartcard-based authentication in the pluto daemon which was broken by the ECDSA support introduced with the 4.3.2 release. - A patch contributed by Heiko Hund fixes mixed IPv6 in IPv4 and vice versa tunnels established with the IKEv1 pluto daemon. - The pluto daemon now uses the libstrongswan x509 plugin for certificates and CRls and the struct id type was replaced by identification_t used by charon and the libstrongswan library. strongswan-4.3.4 ---------------- - IKEv2 charon daemon ported to FreeBSD and Mac OS X. Installation details can be found on wiki.strongswan.org. - ipsec statusall shows the number of bytes transmitted and received over ESP connections configured by the IKEv2 charon daemon. - The IKEv2 charon daemon supports include files in ipsec.secrets. strongswan-4.3.3 ---------------- - The configuration option --enable-integrity-test plus the strongswan.conf option libstrongswan.integrity_test = yes activate integrity tests of the IKE daemons charon and pluto, libstrongswan and all loaded plugins. Thus dynamic library misconfigurations and non-malicious file manipulations can be reliably detected. - The new default setting libstrongswan.ecp_x_coordinate_only=yes allows IKEv1 interoperability with MS Windows using the ECP DH groups 19 and 20. - The IKEv1 pluto daemon now supports the AES-CCM and AES-GCM ESP authenticated encryption algorithms. - The IKEv1 pluto daemon now supports V4 OpenPGP keys. - The RDN parser vulnerability discovered by Orange Labs research team was not completely fixed in version 4.3.2. Some more modifications had to be applied to the asn1_length() function to make it robust. strongswan-4.3.2 ---------------- - The new gcrypt plugin provides symmetric cipher, hasher, RNG, Diffie-Hellman and RSA crypto primitives using the LGPL licensed GNU gcrypt library. - libstrongswan features an integrated crypto selftest framework for registered algorithms. The test-vector plugin provides a first set of test vectors and allows pluto and charon to rely on tested crypto algorithms. - pluto can now use all libstrongswan plugins with the exception of x509 and xcbc. Thanks to the openssl plugin, the ECP Diffie-Hellman groups 19, 20, 21, 25, and 26 as well as ECDSA-256, ECDSA-384, and ECDSA-521 authentication can be used with IKEv1. - Applying their fuzzing tool, the Orange Labs vulnerability research team found another two DoS vulnerabilities, one in the rather old ASN.1 parser of Relative Distinguished Names (RDNs) and a second one in the conversion of ASN.1 UTCTIME and GENERALIZEDTIME strings to a time_t value. strongswan-4.3.1 ---------------- - The nm plugin now passes DNS/NBNS server information to NetworkManager, allowing a gateway administrator to set DNS/NBNS configuration on clients dynamically. - The nm plugin also accepts CA certificates for gateway authentication. If a CA certificate is configured, strongSwan uses the entered gateway address as its idenitity, requiring the gateways certificate to contain the same as subjectAltName. This allows a gateway administrator to deploy the same certificates to Windows 7 and NetworkManager clients. - The command ipsec purgeike deletes IKEv2 SAs that don't have a CHILD SA. The command ipsec down {n} deletes CHILD SA instance n of connection whereas ipsec down {*} deletes all CHILD SA instances. The command ipsec down [n] deletes IKE SA instance n of connection plus dependent CHILD SAs whereas ipsec down [*] deletes all IKE SA instances of connection . - Fixed a regression introduced in 4.3.0 where EAP authentication calculated the AUTH payload incorrectly. Further, the EAP-MSCHAPv2 MSK key derivation has been updated to be compatible with the Windows 7 Release Candidate. - Refactored installation of triggering policies. Routed policies are handled outside of IKE_SAs to keep them installed in any case. A tunnel gets established only once, even if initiation is delayed due network outages. - Improved the handling of multiple acquire signals triggered by the kernel. - Fixed two DoS vulnerabilities in the charon daemon that were discovered by fuzzing techniques: 1) Sending a malformed IKE_SA_INIT request leaved an incomplete state which caused a null pointer dereference if a subsequent CREATE_CHILD_SA request was sent. 2) Sending an IKE_AUTH request with either a missing TSi or TSr payload caused a null pointer derefence because the checks for TSi and TSr were interchanged. The IKEv2 fuzzer used was developed by the Orange Labs vulnerability research team. The tool was initially written by Gabriel Campana and is now maintained by Laurent Butti. - Added support for AES counter mode in ESP in IKEv2 using the proposal keywords aes128ctr, aes192ctr and aes256ctr. - Further progress in refactoring pluto: Use of the curl and ldap plugins for fetching crls and OCSP. Use of the random plugin to get keying material from /dev/random or /dev/urandom. Use of the openssl plugin as an alternative to the aes, des, sha1, sha2, and md5 plugins. The blowfish, twofish, and serpent encryption plugins are now optional and are not enabled by default. strongswan-4.3.0 ---------------- - Support for the IKEv2 Multiple Authentication Exchanges extension (RFC4739). Initiators and responders can use several authentication rounds (e.g. RSA followed by EAP) to authenticate. The new ipsec.conf leftauth/rightauth and leftauth2/rightauth2 parameters define own authentication rounds or setup constraints for the remote peer. See the ipsec.conf man page for more detials. - If glibc printf hooks (register_printf_function) are not available, strongSwan can use the vstr string library to run on non-glibc systems. - The IKEv2 charon daemon can now configure the ESP CAMELLIA-CBC cipher (esp=camellia128|192|256). - Refactored the pluto and scepclient code to use basic functions (memory allocation, leak detective, chunk handling, printf_hooks, strongswan.conf attributes, ASN.1 parser, etc.) from the libstrongswan library. - Up to two DNS and WINS servers to be sent via IKEv1 ModeConfig can be configured in the pluto section of strongswan.conf. strongswan-4.2.14 ----------------- - The new server-side EAP RADIUS plugin (--enable-eap-radius) relays EAP messages to and from a RADIUS server. Successfully tested with with a freeradius server using EAP-MD5 and EAP-SIM. - A vulnerability in the Dead Peer Detection (RFC 3706) code was found by Gerd v. Egidy of Intra2net AG affecting all Openswan and strongSwan releases. A malicious (or expired ISAKMP) R_U_THERE or R_U_THERE_ACK Dead Peer Detection packet can cause the pluto IKE daemon to crash and restart. No authentication or encryption is required to trigger this bug. One spoofed UDP packet can cause the pluto IKE daemon to restart and be unresponsive for a few seconds while restarting. This DPD null state vulnerability has been officially registered as CVE-2009-0790 and is fixed by this release. - ASN.1 to time_t conversion caused a time wrap-around for dates after Jan 18 03:14:07 UTC 2038 on 32-bit platforms. As a workaround such dates are set to the maximum representable time, i.e. Jan 19 03:14:07 UTC 2038. - Distinguished Names containing wildcards (*) are not sent in the IDr payload anymore. strongswan-4.2.13 ----------------- - Fixed a use-after-free bug in the DPD timeout section of the IKEv1 pluto daemon which sporadically caused a segfault. - Fixed a crash in the IKEv2 charon daemon occurring with mixed RAM-based and SQL-based virtual IP address pools. - Fixed ASN.1 parsing of algorithmIdentifier objects where the parameters field is optional. - Ported nm plugin to NetworkManager 7.1. strongswan-4.2.12 ----------------- - Support of the EAP-MSCHAPv2 protocol enabled by the option --enable-eap-mschapv2. Requires the MD4 hash algorithm enabled either by --enable-md4 or --enable-openssl. - Assignment of up to two DNS and up to two WINS servers to peers via the IKEv2 Configuration Payload (CP). The IPv4 or IPv6 nameserver addresses are defined in strongswan.conf. - The strongSwan applet for the Gnome NetworkManager is now built and distributed as a separate tarball under the name NetworkManager-strongswan. strongswan-4.2.11 ----------------- - Fixed ESP NULL encryption broken by the refactoring of keymat.c. Also introduced proper initialization and disposal of keying material. - Fixed the missing listing of connection definitions in ipsec statusall broken by an unfortunate local variable overload. strongswan-4.2.10 ----------------- - Several performance improvements to handle thousands of tunnels with almost linear upscaling. All relevant data structures have been replaced by faster counterparts with better lookup times. - Better parallelization to run charon on multiple cores. Due to improved resource locking and other optimizations the daemon can take full advantage of 16 or even more cores. - The load-tester plugin can use a NULL Diffie-Hellman group and simulate unique identities and certificates by signing peer certificates using a CA on the fly. - The redesigned stroke in-memory IP pool handles leases. The "ipsec leases" command queries assigned leases. - Added support for smartcards in charon by using the ENGINE API provided by OpenSSL, based on patches by Michael Roßberg. - The Padlock plugin supports the hardware RNG found on VIA CPUs to provide a reliable source of randomness. strongswan-4.2.9 ---------------- - Flexible configuration of logging subsystem allowing to log to multiple syslog facilities or to files using fine-grained log levels for each target. - Load testing plugin to do stress testing of the IKEv2 daemon against self or another host. Found and fixed issues during tests in the multi-threaded use of the OpenSSL plugin. - Added profiling code to synchronization primitives to find bottlenecks if running on multiple cores. Found and fixed an issue where parts of the Diffie-Hellman calculation acquired an exclusive lock. This greatly improves parallelization to multiple cores. - updown script invocation has been separated into a plugin of its own to further slim down the daemon core. - Separated IKE_SA/CHILD_SA key derivation process into a closed system, allowing future implementations to use a secured environment in e.g. kernel memory or hardware. - The kernel interface of charon has been modularized. XFRM NETLINK (default) and PFKEY (--enable-kernel-pfkey) interface plugins for the native IPsec stack of the Linux 2.6 kernel as well as a PFKEY interface for the KLIPS IPsec stack (--enable-kernel-klips) are provided. - Basic Mobile IPv6 support has been introduced, securing Binding Update messages as well as tunneled traffic between Mobile Node and Home Agent. The installpolicy=no option allows peaceful cooperation with a dominant mip6d daemon and the new type=transport_proxy implements the special MIPv6 IPsec transport proxy mode where the IKEv2 daemon uses the Care-of-Address but the IPsec SA is set up for the Home Address. - Implemented migration of Mobile IPv6 connections using the KMADDRESS field contained in XFRM_MSG_MIGRATE messages sent by the mip6d daemon via the Linux 2.6.28 (or appropriately patched) kernel. strongswan-4.2.8 ---------------- - IKEv2 charon daemon supports authentication based on raw public keys stored in the SQL database backend. The ipsec listpubkeys command lists the available raw public keys via the stroke interface. - Several MOBIKE improvements: Detect changes in NAT mappings in DPD exchanges, handle events if kernel detects NAT mapping changes in UDP-encapsulated ESP packets (requires kernel patch), reuse old addesses in MOBIKE updates as long as possible and other fixes. - Fixed a bug in addr_in_subnet() which caused insertion of wrong source routes for destination subnets having netwmasks not being a multiple of 8 bits. Thanks go to Wolfgang Steudel, TU Ilmenau for reporting this bug. strongswan-4.2.7 ---------------- - Fixed a Denial-of-Service vulnerability where an IKE_SA_INIT message with a KE payload containing zeroes only can cause a crash of the IKEv2 charon daemon due to a NULL pointer returned by the mpz_export() function of the GNU Multiprecision Library (GMP). Thanks go to Mu Dynamics Research Labs for making us aware of this problem. - The new agent plugin provides a private key implementation on top of an ssh-agent. - The NetworkManager plugin has been extended to support certificate client authentication using RSA keys loaded from a file or using ssh-agent. - Daemon capability dropping has been ported to libcap and must be enabled explicitly --with-capabilities=libcap. Future version will support the newer libcap2 library. - ipsec listalgs lists the IKEv2 cryptografic algorithms registered with the charon keying daemon. strongswan-4.2.6 ---------------- - A NetworkManager plugin allows GUI-based configuration of road-warrior clients in a simple way. It features X509 based gateway authentication and EAP client authentication, tunnel setup/teardown and storing passwords in the Gnome Keyring. - A new EAP-GTC plugin implements draft-sheffer-ikev2-gtc-00.txt and allows username/password authentication against any PAM service on the gateway. The new EAP method interacts nicely with the NetworkManager plugin and allows client authentication against e.g. LDAP. - Improved support for the EAP-Identity method. The new ipsec.conf eap_identity parameter defines an additional identity to pass to the server in EAP authentication. - The "ipsec statusall" command now lists CA restrictions, EAP authentication types and EAP identities. - Fixed two multithreading deadlocks occurring when starting up several hundred tunnels concurrently. - Fixed the --enable-integrity-test configure option which computes a SHA-1 checksum over the libstrongswan library. strongswan-4.2.5 ---------------- - Consistent logging of IKE and CHILD SAs at the audit (AUD) level. - Improved the performance of the SQL-based virtual IP address pool by introducing an additional addresses table. The leases table storing only history information has become optional and can be disabled by setting charon.plugins.sql.lease_history = no in strongswan.conf. - The XFRM_STATE_AF_UNSPEC flag added to xfrm.h allows IPv4-over-IPv6 and IPv6-over-IPv4 tunnels with the 2.6.26 and later Linux kernels. - management of different virtual IP pools for different network interfaces have become possible. - fixed a bug which prevented the assignment of more than 256 virtual IP addresses from a pool managed by an sql database. - fixed a bug which did not delete own IPCOMP SAs in the kernel. strongswan-4.2.4 ---------------- - Added statistics functions to ipsec pool --status and ipsec pool --leases and input validation checks to various ipsec pool commands. - ipsec statusall now lists all loaded charon plugins and displays the negotiated IKEv2 cipher suite proposals. - The openssl plugin supports the elliptic curve Diffie-Hellman groups 19, 20, 21, 25, and 26. - The openssl plugin supports ECDSA authentication using elliptic curve X.509 certificates. - Fixed a bug in stroke which caused multiple charon threads to close the file descriptors during packet transfers over the stroke socket. - ESP sequence numbers are now migrated in IPsec SA updates handled by MOBIKE. Works only with Linux kernels >= 2.6.17. strongswan-4.2.3 ---------------- - Fixed the strongswan.conf path configuration problem that occurred when --sysconfig was not set explicitly in ./configure. - Fixed a number of minor bugs that where discovered during the 4th IKEv2 interoperability workshop in San Antonio, TX. strongswan-4.2.2 ---------------- - Plugins for libstrongswan and charon can optionally be loaded according to a configuration in strongswan.conf. Most components provide a "load = " option followed by a space separated list of plugins to load. This allows e.g. the fallback from a hardware crypto accelerator to to software-based crypto plugins. - Charons SQL plugin has been extended by a virtual IP address pool. Configurations with a rightsourceip=%poolname setting query a SQLite or MySQL database for leases. The "ipsec pool" command helps in administrating the pool database. See ipsec pool --help for the available options - The Authenticated Encryption Algorithms AES-CCM-8/12/16 and AES-GCM-8/12/16 for ESP are now supported starting with the Linux 2.6.25 kernel. The syntax is e.g. esp=aes128ccm12 or esp=aes256gcm16. strongswan-4.2.1 ---------------- - Support for "Hash and URL" encoded certificate payloads has been implemented in the IKEv2 daemon charon. Using the "certuribase" option of a CA section allows to assign a base URL to all certificates issued by the specified CA. The final URL is then built by concatenating that base and the hex encoded SHA1 hash of the DER encoded certificate. Note that this feature is disabled by default and must be enabled using the option "charon.hash_and_url". - The IKEv2 daemon charon now supports the "uniqueids" option to close multiple IKE_SAs with the same peer. The option value "keep" prefers existing connection setups over new ones, where the value "replace" replaces existing connections. - The crypto factory in libstrongswan additionally supports random number generators, plugins may provide other sources of randomness. The default plugin reads raw random data from /dev/(u)random. - Extended the credential framework by a caching option to allow plugins persistent caching of fetched credentials. The "cachecrl" option has been re-implemented. - The new trustchain verification introduced in 4.2.0 has been parallelized. Threads fetching CRL or OCSP information no longer block other threads. - A new IKEv2 configuration attribute framework has been introduced allowing plugins to provide virtual IP addresses, and in the future, other configuration attribute services (e.g. DNS/WINS servers). - The stroke plugin has been extended to provide virtual IP addresses from a pool defined in ipsec.conf. The "rightsourceip" parameter now accepts address pools in CIDR notation (e.g. 10.1.1.0/24). The parameter also accepts the value "%poolname", where "poolname" identifies a pool provided by a separate plugin. - Fixed compilation on uClibc and a couple of other minor bugs. - Set DPD defaults in ipsec starter to dpd_delay=30s and dpd_timeout=150s. - The IKEv1 pluto daemon now supports the ESP encryption algorithm CAMELLIA with key lengths of 128, 192, and 256 bits, as well as the authentication algorithm AES_XCBC_MAC. Configuration example: esp=camellia192-aesxcbc. strongswan-4.2.0 ---------------- - libstrongswan has been modularized to attach crypto algorithms, credential implementations (keys, certificates) and fetchers dynamically through plugins. Existing code has been ported to plugins: - RSA/Diffie-Hellman implementation using the GNU Multi Precision library - X509 certificate system supporting CRLs, OCSP and attribute certificates - Multiple plugins providing crypto algorithms in software - CURL and OpenLDAP fetcher - libstrongswan gained a relational database API which uses pluggable database providers. Plugins for MySQL and SQLite are available. - The IKEv2 keying daemon charon is more extensible. Generic plugins may provide connection configuration, credentials and EAP methods or control the daemon. Existing code has been ported to plugins: - EAP-AKA, EAP-SIM, EAP-MD5 and EAP-Identity - stroke configuration, credential and control (compatible to pluto) - XML bases management protocol to control and query the daemon The following new plugins are available: - An experimental SQL configuration, credential and logging plugin on top of either MySQL or SQLite - A unit testing plugin to run tests at daemon startup - The authentication and credential framework in charon has been heavily refactored to support modular credential providers, proper CERTREQ/CERT payload exchanges and extensible authorization rules. - The framework of strongSwan Manager has envolved to the web application framework libfast (FastCGI Application Server w/ Templates) and is usable by other applications. strongswan-4.1.11 ----------------- - IKE rekeying in NAT situations did not inherit the NAT conditions to the rekeyed IKE_SA so that the UDP encapsulation was lost with the next CHILD_SA rekeying. - Wrong type definition of the next_payload variable in id_payload.c caused an INVALID_SYNTAX error on PowerPC platforms. - Implemented IKEv2 EAP-SIM server and client test modules that use triplets stored in a file. For details on the configuration see the scenario 'ikev2/rw-eap-sim-rsa'. strongswan-4.1.10 ----------------- - Fixed error in the ordering of the certinfo_t records in the ocsp cache that caused multiple entries of the same serial number to be created. - Implementation of a simple EAP-MD5 module which provides CHAP authentication. This may be interesting in conjunction with certificate based server authentication, as weak passwords can't be brute forced (in contradiction to traditional IKEv2 PSK). - A complete software based implementation of EAP-AKA, using algorithms specified in 3GPP2 (S.S0055). This implementation does not use an USIM, but reads the secrets from ipsec.secrets. Make sure to read eap_aka.h before using it. - Support for vendor specific EAP methods using Expanded EAP types. The interface to EAP modules has been slightly changed, so make sure to check the changes if you're already rolling your own modules. strongswan-4.1.9 ---------------- - The default _updown script now dynamically inserts and removes ip6tables firewall rules if leftfirewall=yes is set in IPv6 connections. New IPv6 net-net and roadwarrior (PSK/RSA) scenarios for both IKEv1 and IKEV2 were added. - Implemented RFC4478 repeated authentication to force EAP/Virtual-IP clients to reestablish an IKE_SA within a given timeframe. - strongSwan Manager supports configuration listing, initiation and termination of IKE and CHILD_SAs. - Fixes and improvements to multithreading code. - IKEv2 plugins have been renamed to libcharon-* to avoid naming conflicts. Make sure to remove the old plugins in $libexecdir/ipsec, otherwise they get loaded twice. strongswan-4.1.8 ---------------- - Removed recursive pthread mutexes since uClibc doesn't support them. strongswan-4.1.7 ---------------- - In NAT traversal situations and multiple queued Quick Modes, those pending connections inserted by auto=start after the port floating from 500 to 4500 were erronously deleted. - Added a "forceencaps" connection parameter to enforce UDP encapsulation to surmount restrictive firewalls. NAT detection payloads are faked to simulate a NAT situation and trick the other peer into NAT mode (IKEv2 only). - Preview of strongSwan Manager, a web based configuration and monitoring application. It uses a new XML control interface to query the IKEv2 daemon (see http://wiki.strongswan.org/wiki/Manager). - Experimental SQLite configuration backend which will provide the configuration interface for strongSwan Manager in future releases. - Further improvements to MOBIKE support. strongswan-4.1.6 ---------------- - Since some third party IKEv2 implementations run into problems with strongSwan announcing MOBIKE capability per default, MOBIKE can be disabled on a per-connection-basis using the mobike=no option. Whereas mobike=no disables the sending of the MOBIKE_SUPPORTED notification and the floating to UDP port 4500 with the IKE_AUTH request even if no NAT situation has been detected, strongSwan will still support MOBIKE acting as a responder. - the default ipsec routing table plus its corresponding priority used for inserting source routes has been changed from 100 to 220. It can be configured using the --with-ipsec-routing-table and --with-ipsec-routing-table-prio options. - the --enable-integrity-test configure option tests the integrity of the libstrongswan crypto code during the charon startup. - the --disable-xauth-vid configure option disables the sending of the XAUTH vendor ID. This can be used as a workaround when interoperating with some Windows VPN clients that get into trouble upon reception of an XAUTH VID without eXtended AUTHentication having been configured. - ipsec stroke now supports the rereadsecrets, rereadaacerts, rereadacerts, and listacerts options. strongswan-4.1.5 ---------------- - If a DNS lookup failure occurs when resolving right=% or right= combined with rightallowany=yes then the connection is not updated by ipsec starter thus preventing the disruption of an active IPsec connection. Only if the DNS lookup successfully returns with a changed IP address the corresponding connection definition is updated. - Routes installed by the keying daemons are now in a separate routing table with the ID 100 to avoid conflicts with the main table. Route lookup for IKEv2 traffic is done in userspace to ignore routes installed for IPsec, as IKE traffic shouldn't get encapsulated. strongswan-4.1.4 ---------------- - The pluto IKEv1 daemon now exhibits the same behaviour as its IKEv2 companion charon by inserting an explicit route via the _updown script only if a sourceip exists. This is admissible since routing through the IPsec tunnel is handled automatically by NETKEY's IPsec policies. As a consequence the left|rightnexthop parameter is not required any more. - The new IKEv1 parameter right|leftallowany parameters helps to handle the case where both peers possess dynamic IP addresses that are usually resolved using DynDNS or a similar service. The configuration right=peer.foo.bar rightallowany=yes can be used by the initiator to start up a connection to a peer by resolving peer.foo.bar into the currently allocated IP address. Thanks to the rightallowany flag the connection behaves later on as right=%any so that the peer can rekey the connection as an initiator when his IP address changes. An alternative notation is right=%peer.foo.bar which will implicitly set rightallowany=yes. - ipsec starter now fails more gracefully in the presence of parsing errors. Flawed ca and conn section are discarded and pluto is started if non-fatal errors only were encountered. If right=%peer.foo.bar cannot be resolved by DNS then right=%any will be used so that passive connections as a responder are still possible. - The new pkcs11initargs parameter that can be placed in the setup config section of /etc/ipsec.conf allows the definition of an argument string that is used with the PKCS#11 C_Initialize() function. This non-standard feature is required by the NSS softoken library. This patch was contributed by Robert Varga. - Fixed a bug in ipsec starter introduced by strongswan-2.8.5 which caused a segmentation fault in the presence of unknown or misspelt keywords in ipsec.conf. This bug fix was contributed by Robert Varga. - Partial support for MOBIKE in IKEv2. The initiator acts on interface/ address configuration changes and updates IKE and IPsec SAs dynamically. strongswan-4.1.3 ---------------- - IKEv2 peer configuration selection now can be based on a given certification authority using the rightca= statement. - IKEv2 authentication based on RSA signatures now can handle multiple certificates issued for a given peer ID. This allows a smooth transition in the case of a peer certificate renewal. - IKEv2: Support for requesting a specific virtual IP using leftsourceip on the client and returning requested virtual IPs using rightsourceip=%config on the server. If the server does not support configuration payloads, the client enforces its leftsourceip parameter. - The ./configure options --with-uid/--with-gid allow pluto and charon to drop their privileges to a minimum and change to an other UID/GID. This improves the systems security, as a possible intruder may only get the CAP_NET_ADMIN capability. - Further modularization of charon: Pluggable control interface and configuration backend modules provide extensibility. The control interface for stroke is included, and further interfaces using DBUS (NetworkManager) or XML are on the way. A backend for storing configurations in the daemon is provided and more advanced backends (using e.g. a database) are trivial to implement. - Fixed a compilation failure in libfreeswan occurring with Linux kernel headers > 2.6.17. strongswan-4.1.2 ---------------- - Support for an additional Diffie-Hellman exchange when creating/rekeying a CHILD_SA in IKEv2 (PFS). PFS is enabled when the proposal contains a DH group (e.g. "esp=aes128-sha1-modp1536"). Further, DH group negotiation is implemented properly for rekeying. - Support for the AES-XCBC-96 MAC algorithm for IPsec SAs when using IKEv2 (requires linux >= 2.6.20). It is enabled using e.g. "esp=aes256-aesxcbc". - Working IPv4-in-IPv6 and IPv6-in-IPv4 tunnels for linux >= 2.6.21. - Added support for EAP modules which do not establish an MSK. - Removed the dependencies from the /usr/include/linux/ headers by including xfrm.h, ipsec.h, and pfkeyv2.h in the distribution. - crlNumber is now listed by ipsec listcrls - The xauth_modules.verify_secret() function now passes the connection name. strongswan-4.1.1 ---------------- - Server side cookie support. If to may IKE_SAs are in CONNECTING state, cookies are enabled and protect against DoS attacks with faked source addresses. Number of IKE_SAs in CONNECTING state is also limited per peer address to avoid resource exhaustion. IKE_SA_INIT messages are compared to properly detect retransmissions and incoming retransmits are detected even if the IKE_SA is blocked (e.g. doing OCSP fetches). - The IKEv2 daemon charon now supports dynamic http- and ldap-based CRL fetching enabled by crlcheckinterval > 0 and caching fetched CRLs enabled by cachecrls=yes. - Added the configuration options --enable-nat-transport which enables the potentially insecure NAT traversal for IPsec transport mode and --disable-vendor-id which disables the sending of the strongSwan vendor ID. - Fixed a long-standing bug in the pluto IKEv1 daemon which caused a segmentation fault if a malformed payload was detected in the IKE MR2 message and pluto tried to send an encrypted notification message. - Added the NATT_IETF_02_N Vendor ID in order to support IKEv1 connections with Windows 2003 Server which uses a wrong VID hash. strongswan-4.1.0 ---------------- - Support of SHA2_384 hash function for protecting IKEv1 negotiations and support of SHA2 signatures in X.509 certificates. - Fixed a serious bug in the computation of the SHA2-512 HMAC function. Introduced automatic self-test of all IKEv1 hash and hmac functions during pluto startup. Failure of a self-test currently issues a warning only but does not exit pluto [yet]. - Support for SHA2-256/384/512 PRF and HMAC functions in IKEv2. - Full support of CA information sections. ipsec listcainfos now shows all collected crlDistributionPoints and OCSP accessLocations. - Support of the Online Certificate Status Protocol (OCSP) for IKEv2. This feature requires the HTTP fetching capabilities of the libcurl library which must be enabled by setting the --enable-http configure option. - Refactored core of the IKEv2 message processing code, allowing better code reuse and separation. - Virtual IP support in IKEv2 using INTERNAL_IP4/6_ADDRESS configuration payload. Additionally, the INTERNAL_IP4/6_DNS attribute is interpreted by the requestor and installed in a resolv.conf file. - The IKEv2 daemon charon installs a route for each IPsec policy to use the correct source address even if an application does not explicitly specify it. - Integrated the EAP framework into charon which loads pluggable EAP library modules. The ipsec.conf parameter authby=eap initiates EAP authentication on the client side, while the "eap" parameter on the server side defines the EAP method to use for client authentication. A generic client side EAP-Identity module and an EAP-SIM authentication module using a third party card reader implementation are included. - Added client side support for cookies. - Integrated the fixes done at the IKEv2 interoperability bakeoff, including strict payload order, correct INVALID_KE_PAYLOAD rejection and other minor fixes to enhance interoperability with other implementations. strongswan-4.0.7 ---------------- - strongSwan now interoperates with the NCP Secure Entry Client, the Shrew Soft VPN Client, and the Cisco VPN client, doing both XAUTH and Mode Config. - UNITY attributes are now recognized and UNITY_BANNER is set to a default string. strongswan-4.0.6 ---------------- - IKEv1: Support for extended authentication (XAUTH) in combination with ISAKMP Main Mode RSA or PSK authentication. Both client and server side were implemented. Handling of user credentials can be done by a run-time loadable XAUTH module. By default user credentials are stored in ipsec.secrets. - IKEv2: Support for reauthentication when rekeying - IKEv2: Support for transport mode - fixed a lot of bugs related to byte order - various other bugfixes strongswan-4.0.5 ---------------- - IKEv1: Implementation of ModeConfig push mode via the new connection keyword modeconfig=push allows interoperability with Cisco VPN gateways. - IKEv1: The command ipsec statusall now shows "DPD active" for all ISAKMP SAs that are under active Dead Peer Detection control. - IKEv2: Charon's logging and debugging framework has been completely rewritten. Instead of logger, special printf() functions are used to directly print objects like hosts (%H) identifications (%D), certificates (%Q), etc. The number of debugging levels have been reduced to: 0 (audit), 1 (control), 2 (controlmore), 3 (raw), 4 (private) The debugging levels can either be specified statically in ipsec.conf as config setup charondebug="lib 1, cfg 3, net 2" or changed at runtime via stroke as ipsec stroke loglevel cfg 2 strongswan-4.0.4 ---------------- - Implemented full support for IPv6-in-IPv6 tunnels. - Added configuration options for dead peer detection in IKEv2. dpd_action types "clear", "hold" and "restart" are supported. The dpd_timeout value is not used, as the normal retransmission policy applies to detect dead peers. The dpd_delay parameter enables sending of empty informational message to detect dead peers in case of inactivity. - Added support for preshared keys in IKEv2. PSK keys configured in ipsec.secrets are loaded. The authby parameter specifies the authentication method to authentificate ourself, the other peer may use PSK or RSA. - Changed retransmission policy to respect the keyingtries parameter. - Added private key decryption. PEM keys encrypted with AES-128/192/256 or 3DES are supported. - Implemented DES/3DES algorithms in libstrongswan. 3DES can be used to encrypt IKE traffic. - Implemented SHA-256/384/512 in libstrongswan, allows usage of certificates signed with such a hash algorithm. - Added initial support for updown scripts. The actions up-host/client and down-host/client are executed. The leftfirewall=yes parameter uses the default updown script to insert dynamic firewall rules, a custom updown script may be specified with the leftupdown parameter. strongswan-4.0.3 ---------------- - Added support for the auto=route ipsec.conf parameter and the ipsec route/unroute commands for IKEv2. This allows to set up IKE_SAs and CHILD_SAs dynamically on demand when traffic is detected by the kernel. - Added support for rekeying IKE_SAs in IKEv2 using the ikelifetime parameter. As specified in IKEv2, no reauthentication is done (unlike in IKEv1), only new keys are generated using perfect forward secrecy. An optional flag which enforces reauthentication will be implemented later. - "sha" and "sha1" are now treated as synonyms in the ike= and esp= algorithm configuration statements. strongswan-4.0.2 ---------------- - Full X.509 certificate trust chain verification has been implemented. End entity certificates can be exchanged via CERT payloads. The current default is leftsendcert=always, since CERTREQ payloads are not supported yet. Optional CRLs must be imported locally into /etc/ipsec.d/crls. - Added support for leftprotoport/rightprotoport parameters in IKEv2. IKEv2 would offer more possibilities for traffic selection, but the Linux kernel currently does not support it. That's why we stick with these simple ipsec.conf rules for now. - Added Dead Peer Detection (DPD) which checks liveliness of remote peer if no IKE or ESP traffic is received. DPD is currently hardcoded (dpdaction=clear, dpddelay=60s). - Initial NAT traversal support in IKEv2. Charon includes NAT detection notify payloads to detect NAT routers between the peers. It switches to port 4500, uses UDP encapsulated ESP packets, handles peer address changes gracefully and sends keep alive message periodically. - Reimplemented IKE_SA state machine for charon, which allows simultaneous rekeying, more shared code, cleaner design, proper retransmission and a more extensible code base. - The mixed PSK/RSA roadwarrior detection capability introduced by the strongswan-2.7.0 release necessitated the pre-parsing of the IKE proposal payloads by the responder right before any defined IKE Main Mode state had been established. Although any form of bad proposal syntax was being correctly detected by the payload parser, the subsequent error handler didn't check the state pointer before logging current state information, causing an immediate crash of the pluto keying daemon due to a NULL pointer. strongswan-4.0.1 ---------------- - Added algorithm selection to charon: New default algorithms for ike=aes128-sha-modp2048, as both daemons support it. The default for IPsec SAs is now esp=aes128-sha,3des-md5. charon handles the ike/esp parameter the same way as pluto. As this syntax does not allow specification of a pseudo random function, the same algorithm as for integrity is used (currently sha/md5). Supported algorithms for IKE: Encryption: aes128, aes192, aes256 Integrity/PRF: md5, sha (using hmac) DH-Groups: modp768, 1024, 1536, 2048, 4096, 8192 and for ESP: Encryption: aes128, aes192, aes256, 3des, blowfish128, blowfish192, blowfish256 Integrity: md5, sha1 More IKE encryption algorithms will come after porting libcrypto into libstrongswan. - initial support for rekeying CHILD_SAs using IKEv2. Currently no perfect forward secrecy is used. The rekeying parameters rekey, rekeymargin, rekeyfuzz and keylife from ipsec.conf are now supported when using IKEv2. WARNING: charon currently is unable to handle simultaneous rekeying. To avoid such a situation, use a large rekeyfuzz, or even better, set rekey=no on one peer. - support for host2host, net2net, host2net (roadwarrior) tunnels using predefined RSA certificates (see uml scenarios for configuration examples). - new build environment featuring autotools. Features such as HTTP, LDAP and smartcard support may be enabled using the ./configure script. Changing install directories is possible, too. See ./configure --help for more details. - better integration of charon with ipsec starter, which allows (almost) transparent operation with both daemons. charon handles ipsec commands up, down, status, statusall, listall, listcerts and allows proper load, reload and delete of connections via ipsec starter. strongswan-4.0.0 ---------------- - initial support of the IKEv2 protocol. Connections in ipsec.conf designated by keyexchange=ikev2 are negotiated by the new IKEv2 charon keying daemon whereas those marked by keyexchange=ikev1 or the default keyexchange=ike are handled thy the IKEv1 pluto keying daemon. Currently only a limited subset of functions are available with IKEv2 (Default AES encryption, authentication based on locally imported X.509 certificates, unencrypted private RSA keys in PKCS#1 file format, limited functionality of the ipsec status command). strongswan-2.7.0 ---------------- - the dynamic iptables rules from the _updown_x509 template for KLIPS and the _updown_policy template for NETKEY have been merged into the default _updown script. The existing left|rightfirewall keyword causes the automatic insertion and deletion of ACCEPT rules for tunneled traffic upon the successful setup and teardown of an IPsec SA, respectively. left|rightfirwall can be used with KLIPS under any Linux 2.4 kernel or with NETKEY under a Linux kernel version >= 2.6.16 in conjunction with iptables >= 1.3.5. For NETKEY under a Linux kernel version < 2.6.16 which does not support IPsec policy matching yet, please continue to use a copy of the _updown_espmark template loaded via the left|rightupdown keyword. - a new left|righthostaccess keyword has been introduced which can be used in conjunction with left|rightfirewall and the default _updown script. By default leftfirewall=yes inserts a bi-directional iptables FORWARD rule for a local client network with a netmask different from 255.255.255.255 (single host). This does not allow to access the VPN gateway host via its internal network interface which is part of the client subnet because an iptables INPUT and OUTPUT rule would be required. lefthostaccess=yes will cause this additional ACCEPT rules to be inserted. - mixed PSK|RSA roadwarriors are now supported. The ISAKMP proposal payload is preparsed in order to find out whether the roadwarrior requests PSK or RSA so that a matching connection candidate can be found. strongswan-2.6.4 ---------------- - the new _updown_policy template allows ipsec policy based iptables firewall rules. Required are iptables version >= 1.3.5 and linux kernel >= 2.6.16. This script obsoletes the _updown_espmark template, so that no INPUT mangle rules are required any more. - added support of DPD restart mode - ipsec starter now allows the use of wildcards in include statements as e.g. in "include /etc/my_ipsec/*.conf". Patch courtesy of Matthias Haas. - the Netscape OID 'employeeNumber' is now recognized and can be used as a Relative Distinguished Name in certificates. strongswan-2.6.3 ---------------- - /etc/init.d/ipsec or /etc/rc.d/ipsec is now a copy of the ipsec command and not of ipsec setup any more. - ipsec starter now supports AH authentication in conjunction with ESP encryption. AH authentication is configured in ipsec.conf via the auth=ah parameter. - The command ipsec scencrypt|scdecrypt is now an alias for ipsec whack --scencrypt|scdecrypt . - get_sa_info() now determines for the native netkey IPsec stack the exact time of the last use of an active eroute. This information is used by the Dead Peer Detection algorithm and is also displayed by the ipsec status command. strongswan-2.6.2 ---------------- - running under the native Linux 2.6 IPsec stack, the function get_sa_info() is called by ipsec auto --status to display the current number of transmitted bytes per IPsec SA. - get_sa_info() is also used by the Dead Peer Detection process to detect recent ESP activity. If ESP traffic was received from the peer within the last dpd_delay interval then no R_Y_THERE notification must be sent. - strongSwan now supports the Relative Distinguished Name "unstructuredName" in ID_DER_ASN1_DN identities. The following notations are possible: rightid="unstructuredName=John Doe" rightid="UN=John Doe" - fixed a long-standing bug which caused PSK-based roadwarrior connections to segfault in the function id.c:same_id() called by keys.c:get_secret() if an FQDN, USER_FQDN, or Key ID was defined, as in the following example. conn rw right=%any rightid=@foo.bar authby=secret - the ipsec command now supports most ipsec auto commands (e.g. ipsec listall). - ipsec starter didn't set host_addr and client.addr ports in whack msg. - in order to guarantee backwards-compatibility with the script-based auto function (e.g. auto --replace), the ipsec starter scripts stores the defaultroute information in the temporary file /var/run/ipsec.info. - The compile-time option USE_XAUTH_VID enables the sending of the XAUTH Vendor ID which is expected by Cisco PIX 7 boxes that act as IKE Mode Config servers. - the ipsec starter now also recognizes the parameters authby=never and type=passthrough|pass|drop|reject. strongswan-2.6.1 ---------------- - ipsec starter now supports the also parameter which allows a modular structure of the connection definitions. Thus "ipsec start" is now ready to replace "ipsec setup". strongswan-2.6.0 ---------------- - Mathieu Lafon's popular ipsec starter tool has been added to the strongSwan distribution. Many thanks go to Stephan Scholz from astaro for his integration work. ipsec starter is a C program which is going to replace the various shell and awk starter scripts (setup, _plutoload, _plutostart, _realsetup, _startklips, _confread, and auto). Since ipsec.conf is now parsed only once, the starting of multiple tunnels is accelerated tremedously. - Added support of %defaultroute to the ipsec starter. If the IP address changes, a HUP signal to the ipsec starter will automatically reload pluto's connections. - moved most compile time configurations from pluto/Makefile to Makefile.inc by defining the options USE_LIBCURL, USE_LDAP, USE_SMARTCARD, and USE_NAT_TRAVERSAL_TRANSPORT_MODE. - removed the ipsec verify and ipsec newhostkey commands - fixed some 64-bit issues in formatted print statements - The scepclient functionality implementing the Simple Certificate Enrollment Protocol (SCEP) is nearly complete but hasn't been documented yet. strongswan-2.5.7 ---------------- - CA certicates are now automatically loaded from a smartcard or USB crypto token and appear in the ipsec auto --listcacerts listing. strongswan-2.5.6 ---------------- - when using "ipsec whack --scencrypt " with a PKCS#11 library that does not support the C_Encrypt() Cryptoki function (e.g. OpenSC), the RSA encryption is done in software using the public key fetched from the smartcard. - The scepclient function now allows to define the validity of a self-signed certificate using the --days, --startdate, and --enddate options. The default validity has been changed from one year to five years. strongswan-2.5.5 ---------------- - the config setup parameter pkcs11proxy=yes opens pluto's PKCS#11 interface to other applications for RSA encryption and decryption via the whack interface. Notation: ipsec whack --scencrypt [--inbase 16|hex|64|base64|256|text|ascii] [--outbase 16|hex|64|base64|256|text|ascii] [--keyid ] ipsec whack --scdecrypt [--inbase 16|hex|64|base64|256|text|ascii] [--outbase 16|hex|64|base64|256|text|ascii] [--keyid ] The default setting for inbase and outbase is hex. The new proxy interface can be used for securing symmetric encryption keys required by the cryptoloop or dm-crypt disk encryption schemes, especially in the case when pkcs11keepstate=yes causes pluto to lock the pkcs11 slot permanently. - if the file /etc/ipsec.secrets is lacking during the startup of pluto then the root-readable file /etc/ipsec.d/private/myKey.der containing a 2048 bit RSA private key and a matching self-signed certificate stored in the file /etc/ipsec.d/certs/selfCert.der is automatically generated by calling the function ipsec scepclient --out pkcs1 --out cert-self scepclient was written by Jan Hutter and Martin Willi, students at the University of Applied Sciences in Rapperswil, Switzerland. strongswan-2.5.4 ---------------- - the current extension of the PKCS#7 framework introduced a parsing error in PKCS#7 wrapped X.509 certificates that are e.g. transmitted by Windows XP when multi-level CAs are used. the parsing syntax has been fixed. - added a patch by Gerald Richter which tolerates multiple occurrences of the ipsec0 interface when using KLIPS. strongswan-2.5.3 ---------------- - with gawk-3.1.4 the word "default2 has become a protected keyword for use in switch statements and cannot be used any more in the strongSwan scripts. This problem has been solved by renaming "default" to "defaults" and "setdefault" in the scripts _confread and auto, respectively. - introduced the parameter leftsendcert with the values always|yes (the default, always send a cert) ifasked (send the cert only upon a cert request) never|no (never send a cert, used for raw RSA keys and self-signed certs) - fixed the initialization of the ESP key length to a default of 128 bits in the case that the peer does not send a key length attribute for AES encryption. - applied Herbert Xu's uniqueIDs patch - applied Herbert Xu's CLOEXEC patches strongswan-2.5.2 ---------------- - CRLs can now be cached also in the case when the issuer's certificate does not contain a subjectKeyIdentifier field. In that case the subjectKeyIdentifier is computed by pluto as the 160 bit SHA-1 hash of the issuer's public key in compliance with section 4.2.1.2 of RFC 3280. - Fixed a bug introduced by strongswan-2.5.1 which eliminated not only multiple Quick Modes of a given connection but also multiple connections between two security gateways. strongswan-2.5.1 ---------------- - Under the native IPsec of the Linux 2.6 kernel, a %trap eroute installed either by setting auto=route in ipsec.conf or by a connection put into hold, generates an XFRM_AQUIRE event for each packet that wants to use the not-yet exisiting tunnel. Up to now each XFRM_AQUIRE event led to an entry in the Quick Mode queue, causing multiple IPsec SA to be established in rapid succession. Starting with strongswan-2.5.1 only a single IPsec SA is established per host-pair connection. - Right after loading the PKCS#11 module, all smartcard slots are searched for certificates. The result can be viewed using the command ipsec auto --listcards The certificate objects found in the slots are numbered starting with #1, #2, etc. This position number can be used to address certificates (leftcert=%smartcard) and keys (: PIN %smartcard) in ipsec.conf and ipsec.secrets, respectively: %smartcard (selects object #1) %smartcard#1 (selects object #1) %smartcard#3 (selects object #3) As an alternative the existing retrieval scheme can be used: %smartcard:45 (selects object with id=45) %smartcard0 (selects first object in slot 0) %smartcard4:45 (selects object in slot 4 with id=45) - Depending on the settings of CKA_SIGN and CKA_DECRYPT private key flags either C_Sign() or C_Decrypt() is used to generate a signature. - The output buffer length parameter siglen in C_Sign() is now initialized to the actual size of the output buffer prior to the function call. This fixes the CKR_BUFFER_TOO_SMALL error that could occur when using the OpenSC PKCS#11 module. - Changed the initialization of the PKCS#11 CK_MECHANISM in C_SignInit() to mech = { CKM_RSA_PKCS, NULL_PTR, 0 }. - Refactored the RSA public/private key code and transferred it from keys.c to the new pkcs1.c file as a preparatory step towards the release of the SCEP client. strongswan-2.5.0 ---------------- - The loading of a PKCS#11 smartcard library module during runtime does not require OpenSC library functions any more because the corresponding code has been integrated into smartcard.c. Also the RSAREF pkcs11 header files have been included in a newly created pluto/rsaref directory so that no external include path has to be defined any longer. - A long-awaited feature has been implemented at last: The local caching of CRLs fetched via HTTP or LDAP, activated by the parameter cachecrls=yes in the config setup section of ipsec.conf. The dynamically fetched CRLs are stored under a unique file name containing the issuer's subjectKeyID in /etc/ipsec.d/crls. - Applied a one-line patch courtesy of Michael Richardson from the Openswan project which fixes the kernel-oops in KLIPS when an snmp daemon is running on the same box. strongswan-2.4.4 ---------------- - Eliminated null length CRL distribution point strings. - Fixed a trust path evaluation bug introduced with 2.4.3 strongswan-2.4.3 ---------------- - Improved the joint OCSP / CRL revocation policy. OCSP responses have precedence over CRL entries. - Introduced support of CRLv2 reason codes. - Fixed a bug with key-pad equipped readers which caused pluto to prompt for the pin via the console when the first occasion to enter the pin via the key-pad was missed. - When pluto is built with LDAP_V3 enabled, the library liblber required by newer versions of openldap is now included. strongswan-2.4.2 ---------------- - Added the _updown_espmark template which requires all incoming ESP traffic to be marked with a default mark value of 50. - Introduced the pkcs11keepstate parameter in the config setup section of ipsec.conf. With pkcs11keepstate=yes the PKCS#11 session and login states are kept as long as possible during the lifetime of pluto. This means that a PIN entry via a key pad has to be done only once. - Introduced the pkcs11module parameter in the config setup section of ipsec.conf which specifies the PKCS#11 module to be used with smart cards. Example: pkcs11module=/usr/lib/pkcs11/opensc-pkcs11.lo - Added support of smartcard readers equipped with a PIN pad. - Added patch by Jay Pfeifer which detects when netkey modules have been statically built into the Linux 2.6 kernel. - Added two patches by Herbert Xu. The first uses ip xfrm instead of setkey to flush the IPsec policy database. The second sets the optional flag in inbound IPComp SAs only. - Applied Ulrich Weber's patch which fixes an interoperability problem between native IPsec and KLIPS systems caused by setting the replay window to 32 instead of 0 for ipcomp. strongswan-2.4.1 ---------------- - Fixed a bug which caused an unwanted Mode Config request to be initiated in the case where "right" was used to denote the local side in ipsec.conf and "left" the remote side, contrary to the recommendation that "right" be remote and "left" be"local". strongswan-2.4.0a ----------------- - updated Vendor ID to strongSwan-2.4.0 - updated copyright statement to include David Buechi and Michael Meier strongswan-2.4.0 ---------------- - strongSwan now communicates with attached smartcards and USB crypto tokens via the standardized PKCS #11 interface. By default the OpenSC library from www.opensc.org is used but any other PKCS#11 library could be dynamically linked. strongSwan's PKCS#11 API was implemented by David Buechi and Michael Meier, both graduates of the Zurich University of Applied Sciences in Winterthur, Switzerland. - When a %trap eroute is triggered by an outgoing IP packet then the native IPsec stack of the Linux 2.6 kernel [often/ always?] returns an XFRM_ACQUIRE message with an undefined protocol family field and the connection setup fails. As a workaround IPv4 (AF_INET) is now assumed. - the results of the UML test scenarios are now enhanced with block diagrams of the virtual network topology used in a particular test. strongswan-2.3.2 ---------------- - fixed IV used to decrypt informational messages. This bug was introduced with Mode Config functionality. - fixed NCP Vendor ID. - undid one of Ulrich Weber's maximum udp size patches because it caused a segmentation fault with NAT-ed Delete SA messages. - added UML scenarios wildcards and attr-cert which demonstrate the implementation of IPsec policies based on wildcard parameters contained in Distinguished Names and on X.509 attribute certificates, respectively. strongswan-2.3.1 ---------------- - Added basic Mode Config functionality - Added Mathieu Lafon's patch which upgrades the status of the NAT-Traversal implementation to RFC 3947. - The _startklips script now also loads the xfrm4_tunnel module. - Added Ulrich Weber's netlink replay window size and maximum udp size patches. - UML testing now uses the Linux 2.6.10 UML kernel by default. strongswan-2.3.0 ---------------- - Eric Marchionni and Patrik Rayo, both recent graduates from the Zuercher Hochschule Winterthur in Switzerland, created a User-Mode-Linux test setup for strongSwan. For more details please read the INSTALL and README documents in the testing subdirectory. - Full support of group attributes based on X.509 attribute certificates. Attribute certificates can be generated using the openac facility. For more details see man ipsec_openac. The group attributes can be used in connection definitions in order to give IPsec access to specific user groups. This is done with the new parameter left|rightgroups as in rightgroups="Research, Sales" giving access to users possessing the group attributes Research or Sales, only. - In Quick Mode clients with subnet mask /32 are now coded as IP_V4_ADDRESS or IP_V6_ADDRESS. This should fix rekeying problems with the SafeNet/SoftRemote and NCP Secure Entry Clients. - Changed the defaults of the ikelifetime and keylife parameters to 3h and 1h, respectively. The maximum allowable values are now both set to 24 h. - Suppressed notification wars between two IPsec peers that could e.g. be triggered by incorrect ISAKMP encryption. - Public RSA keys can now have identical IDs if either the issuing CA or the serial number is different. The serial number of a certificate is now shown by the command ipsec auto --listpubkeys strongswan-2.2.2 ---------------- - Added Tuomo Soini's sourceip feature which allows a strongSwan roadwarrior to use a fixed Virtual IP (see README section 2.6) and reduces the well-known four tunnel case on VPN gateways to a single tunnel definition (see README section 2.4). - Fixed a bug occurring with NAT-Traversal enabled when the responder suddenly turns initiator and the initiator cannot find a matching connection because of the floated IKE port 4500. - Removed misleading ipsec verify command from barf. - Running under the native IP stack, ipsec --version now shows the Linux kernel version (courtesy to the Openswan project). strongswan-2.2.1 ---------------- - Introduced the ipsec auto --listalgs monitoring command which lists all currently registered IKE and ESP algorithms. - Fixed a bug in the ESP algorithm selection occurring when the strict flag is set and the first proposed transform does not match. - Fixed another deadlock in the use of the lock_certs_and_keys() mutex, occurring when a smartcard is present. - Prevented that a superseded Phase1 state can trigger a DPD_TIMEOUT event. - Fixed the printing of the notification names (null) - Applied another of Herbert Xu's Netlink patches. strongswan-2.2.0 ---------------- - Support of Dead Peer Detection. The connection parameter dpdaction=clear|hold activates DPD for the given connection. - The default Opportunistic Encryption (OE) policy groups are not automatically included anymore. Those wishing to activate OE can include the policy group with the following statement in ipsec.conf: include /etc/ipsec.d/examples/oe.conf The default for [right|left]rsasigkey is now set to %cert. - strongSwan now has a Vendor ID of its own which can be activated using the compile option VENDORID - Applied Herbert Xu's patch which sets the compression algorithm correctly. - Applied Herbert Xu's patch fixing an ESPINUDP problem - Applied Herbert Xu's patch setting source/destination port numbers. - Reapplied one of Herbert Xu's NAT-Traversal patches which got lost during the migration from SuperFreeS/WAN. - Fixed a deadlock in the use of the lock_certs_and_keys() mutex. - Fixed the unsharing of alg parameters when instantiating group connection. strongswan-2.1.5 ---------------- - Thomas Walpuski made me aware of a potential DoS attack via a PKCS#7-wrapped certificate bundle which could overwrite valid CA certificates in Pluto's authority certificate store. This vulnerability was fixed by establishing trust in CA candidate certificates up to a trusted root CA prior to insertion into Pluto's chained list. - replaced the --assign option by the -v option in the auto awk script in order to make it run with mawk under debian/woody. strongswan-2.1.4 ---------------- - Split of the status information between ipsec auto --status (concise) and ipsec auto --statusall (verbose). Both commands can be used with an optional connection selector: ipsec auto --status[all] - Added the description of X.509 related features to the ipsec_auto(8) man page. - Hardened the ASN.1 parser in debug mode, especially the printing of malformed distinguished names. - The size of an RSA public key received in a certificate is now restricted to 512 bits <= modulus length <= 8192 bits. - Fixed the debug mode enumeration. strongswan-2.1.3 ---------------- - Fixed another PKCS#7 vulnerability which could lead to an endless loop while following the X.509 trust chain. strongswan-2.1.2 ---------------- - Fixed the PKCS#7 vulnerability discovered by Thomas Walpuski that accepted end certificates having identical issuer and subject distinguished names in a multi-tier X.509 trust chain. strongswan-2.1.1 ---------------- - Removed all remaining references to ipsec_netlink.h in KLIPS. strongswan-2.1.0 ---------------- - The new "ca" section allows to define the following parameters: ca kool cacert=koolCA.pem # cacert of kool CA ocspuri=http://ocsp.kool.net:8001 # ocsp server ldapserver=ldap.kool.net # default ldap server crluri=http://www.kool.net/kool.crl # crl distribution point crluri2="ldap:///O=Kool, C= .." # crl distribution point #2 auto=add # add, ignore The ca definitions can be monitored via the command ipsec auto --listcainfos - Fixed cosmetic corruption of /proc filesystem by integrating D. Hugh Redelmeier's freeswan-2.06 kernel fixes. strongswan-2.0.2 ---------------- - Added support for the 818043 NAT-Traversal update of Microsoft's Windows 2000/XP IPsec client which sends an ID_FQDN during Quick Mode. - A symbolic link to libcrypto is now added in the kernel sources during kernel compilation - Fixed a couple of 64 bit issues (mostly casts to int). Thanks to Ken Bantoft who checked my sources on a 64 bit platform. - Replaced s[n]printf() statements in the kernel by ipsec_snprintf(). Credits go to D. Hugh Redelmeier, Michael Richardson, and Sam Sgro of the FreeS/WAN team who solved this problem with the 2.4.25 kernel. strongswan-2.0.1 ---------------- - an empty ASN.1 SEQUENCE OF or SET OF object (e.g. a subjectAltName certificate extension which contains no generalName item) can cause a pluto crash. This bug has been fixed. Additionally the ASN.1 parser has been hardened to make it more robust against malformed ASN.1 objects. - applied Herbert Xu's NAT-T patches which fixes NAT-T under the native Linux 2.6 IPsec stack. strongswan-2.0.0 ---------------- - based on freeswan-2.04, x509-1.5.3, nat-0.6c, alg-0.8.1rc12