diff options
Diffstat (limited to 'src/lib/protocols/tls.c')
| -rw-r--r-- | src/lib/protocols/tls.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/src/lib/protocols/tls.c b/src/lib/protocols/tls.c index 171d7c489..efa86a18e 100644 --- a/src/lib/protocols/tls.c +++ b/src/lib/protocols/tls.c @@ -450,6 +450,11 @@ static void processCertificateElements(struct ndpi_detection_module_struct *ndpi } if(rdn_len) flow->protos.stun_ssl.ssl.subjectDN = strdup(rdnSeqBuf); + + if(flow->protos.stun_ssl.ssl.subjectDN && flow->protos.stun_ssl.ssl.issuerDN + && (!strcmp(flow->protos.stun_ssl.ssl.subjectDN, flow->protos.stun_ssl.ssl.issuerDN))) + NDPI_SET_BIT_16(flow->risk, NDPI_TLS_SELFSIGNED_CERTIFICATE); + #if DEBUG_TLS printf("[TLS] %s() SubjectDN [%s]\n", __FUNCTION__, rdnSeqBuf); #endif @@ -834,7 +839,9 @@ int processClientServerHello(struct ndpi_detection_module_struct *ndpi_struct, tls_version = ntohs(*((u_int16_t*)&packet->payload[version_offset])); flow->protos.stun_ssl.ssl.ssl_version = ja3.tls_handshake_version = tls_version; - + if(flow->protos.stun_ssl.ssl.ssl_version < 0x0302) /* TLSv1.1 */ + NDPI_SET_BIT_16(flow->risk, NDPI_TLS_OBSOLETE_VERSION); + if(handshake_type == 0x02 /* Server Hello */) { int i, rc; @@ -857,7 +864,9 @@ int processClientServerHello(struct ndpi_detection_module_struct *ndpi_struct, return(0); /* Not found */ ja3.num_cipher = 1, ja3.cipher[0] = ntohs(*((u_int16_t*)&packet->payload[offset])); - flow->protos.stun_ssl.ssl.server_unsafe_cipher = ndpi_is_safe_ssl_cipher(ja3.cipher[0]); + if((flow->protos.stun_ssl.ssl.server_unsafe_cipher = ndpi_is_safe_ssl_cipher(ja3.cipher[0])) == 1) + NDPI_SET_BIT_16(flow->risk, NDPI_TLS_WEAK_CIPHER); + flow->protos.stun_ssl.ssl.server_cipher = ja3.cipher[0]; #ifdef DEBUG_TLS |