diff options
Diffstat (limited to 'src/lib/protocols/s7comm.c')
| -rw-r--r-- | src/lib/protocols/s7comm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/lib/protocols/s7comm.c b/src/lib/protocols/s7comm.c index 8a522a2c7..7d2b92642 100644 --- a/src/lib/protocols/s7comm.c +++ b/src/lib/protocols/s7comm.c @@ -31,7 +31,7 @@ void ndpi_search_s7comm_tcp(struct ndpi_detection_module_struct *ndpi_struct, u_int16_t s7comm_port = htons(102);
if(packet->tcp) {
- if((packet->payload[0]==0x03)&&(packet->payload[1]==0x00)&&((packet->tcp->dest == s7comm_port) || (packet->tcp->source == s7comm_port))) {
+ if((packet->payload_packet_len >= 2) && (packet->payload[0]==0x03)&&(packet->payload[1]==0x00)&&((packet->tcp->dest == s7comm_port) || (packet->tcp->source == s7comm_port))) {
NDPI_LOG_INFO(ndpi_struct, "found S7\n");
ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_S7COMM, NDPI_PROTOCOL_UNKNOWN);
|