diff options
Diffstat (limited to 'src/lib/ndpi_main.c')
| -rw-r--r-- | src/lib/ndpi_main.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/lib/ndpi_main.c b/src/lib/ndpi_main.c index d9dc9ec02..f85ff831d 100644 --- a/src/lib/ndpi_main.c +++ b/src/lib/ndpi_main.c @@ -3066,6 +3066,12 @@ u_int16_t ndpi_guess_protocol_id(struct ndpi_detection_module_struct *ndpi_str, if (NDPI_ENTROPY_ENCRYPTED_OR_RANDOM(flow->entropy) != 0) { ndpi_set_risk(ndpi_str, flow, NDPI_SUSPICIOUS_ENTROPY); } + + struct ndpi_icmphdr * const icmphdr = (struct ndpi_icmphdr *)packet->payload; + u_int16_t chksm = ndpi_calculate_icmp4_checksum(packet->payload, packet->payload_packet_len); + if (icmphdr->checksum != chksm) { + ndpi_set_risk(ndpi_str, flow, NDPI_MALFORMED_PACKET); + } } } } |