diff options
Diffstat (limited to 'src/libstrongswan/asn1/asn1.c')
| -rw-r--r-- | src/libstrongswan/asn1/asn1.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/src/libstrongswan/asn1/asn1.c b/src/libstrongswan/asn1/asn1.c index 6264bdc54..6f549d42d 100644 --- a/src/libstrongswan/asn1/asn1.c +++ b/src/libstrongswan/asn1/asn1.c @@ -497,8 +497,14 @@ int asn1_parse_algorithmIdentifier(chunk_t blob, int level0, chunk_t *parameters bool is_asn1(chunk_t blob) { u_int len; - u_char tag = *blob.ptr; + u_char tag; + if (!blob.len || !blob.ptr) + { + return FALSE; + } + + tag = *blob.ptr; if (tag != ASN1_SEQUENCE && tag != ASN1_SET && tag != ASN1_OCTET_STRING) { DBG2(DBG_LIB, " file content is not binary ASN.1"); |