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authorLuca Deri <lucaderi@users.noreply.github.com>2020-04-15 08:35:28 +0200
committerGitHub <noreply@github.com>2020-04-15 08:35:28 +0200
commitd3b4b81d6fd9adc5bbe6c04e45d51989bacd4102 (patch)
tree2595f332953f42ed337db40f3268c435a4767da4 /src/lib/protocols/s7comm.c
parentd665df64e297051cd5b48605974846fa7076d883 (diff)
parente84563f9710ca1996eb7428a22a058527e604431 (diff)
Merge pull request #867 from IvanNardi/memory-leaks
Memory leaks
Diffstat (limited to 'src/lib/protocols/s7comm.c')
-rw-r--r--src/lib/protocols/s7comm.c2
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);