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| author | Christian Breunig <christian@breunig.cc> | 2023-12-07 21:30:57 +0100 |
|---|---|---|
| committer | Christian Breunig <christian@breunig.cc> | 2023-12-08 07:46:21 +0100 |
| commit | e134dc4171b051d0f98c7151ef32a347bc4f87e2 (patch) | |
| tree | a82d1acdfa6265bdbd419b519b4433851982862a /src | |
| parent | 8d3e287d028d3fc92256cc86988c06ca5301c7c1 (diff) | |
| download | vyos-1x-e134dc4171b051d0f98c7151ef32a347bc4f87e2.tar.gz vyos-1x-e134dc4171b051d0f98c7151ef32a347bc4f87e2.zip | |
login: T4943: use pam-auth-update to enable/disable Google authenticator
The initial version always enabled Google authenticator (2FA/MFA) support by
hardcoding the PAM module for sshd and login.
This change only enables the PAM module on demand if any use has 2FA/MFA
configured. Enabling the module is done system wide via pam-auth-update by
using a predefined template.
Can be tested using:
set system login user vyos authentication plaintext-password vyos
set system login user vyos authentication otp key 'QY735IG5HDHBFHS5W7Y2A4EM274SMT3O'
See https://docs.vyos.io/en/latest/configuration/system/login.html for additional
details.
Diffstat (limited to 'src')
| -rwxr-xr-x | src/conf_mode/system-login.py | 7 | ||||
| -rwxr-xr-x | src/init/vyos-router | 2 | ||||
| -rw-r--r-- | src/pam-configs/mfa-google-authenticator | 8 |
3 files changed, 17 insertions, 0 deletions
diff --git a/src/conf_mode/system-login.py b/src/conf_mode/system-login.py index 87a269499..cd85a5066 100755 --- a/src/conf_mode/system-login.py +++ b/src/conf_mode/system-login.py @@ -306,6 +306,7 @@ def generate(login): def apply(login): + enable_otp = False if 'user' in login: for user, user_config in login['user'].items(): # make new user using vyatta shell and make home directory (-m), @@ -350,6 +351,7 @@ def apply(login): # Generate 2FA/MFA One-Time-Pad configuration if dict_search('authentication.otp.key', user_config): + enable_otp = True render(f'{home_dir}/.google_authenticator', 'login/pam_otp_ga.conf.j2', user_config, permission=0o400, user=user, group='users') else: @@ -398,6 +400,11 @@ def apply(login): pam_profile = 'tacplus-optional' cmd(f'pam-auth-update --enable {pam_profile}') + # Enable/disable Google authenticator + cmd('pam-auth-update --disable mfa-google-authenticator') + if enable_otp: + cmd(f'pam-auth-update --enable mfa-google-authenticator') + return None diff --git a/src/init/vyos-router b/src/init/vyos-router index 35095afe4..711681a8e 100755 --- a/src/init/vyos-router +++ b/src/init/vyos-router @@ -260,6 +260,8 @@ EOF rm -f /etc/pam_radius_auth.conf pam-auth-update --disable tacplus-mandatory tacplus-optional rm -f /etc/tacplus_nss.conf /etc/tacplus_servers + # and no Google authenticator for 2FA/MFA + pam-auth-update --disable mfa-google-authenticator # Certain configuration files are re-generated by the configuration # subsystem and must reside under /etc and can not easily be moved to /run. diff --git a/src/pam-configs/mfa-google-authenticator b/src/pam-configs/mfa-google-authenticator new file mode 100644 index 000000000..9e49e5ef9 --- /dev/null +++ b/src/pam-configs/mfa-google-authenticator @@ -0,0 +1,8 @@ +Name: Google Authenticator PAM module (2FA/MFA) +Default: no +Priority: 384 + +Auth-Type: Primary +Auth: + [default=ignore success=ok auth_err=die] pam_google_authenticator.so nullok forward_pass + |