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-rw-r--r--src/lib/protocols/http.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/lib/protocols/http.c b/src/lib/protocols/http.c
index a562aa03e..6fe6cab33 100644
--- a/src/lib/protocols/http.c
+++ b/src/lib/protocols/http.c
@@ -855,7 +855,8 @@ static void check_content_type_and_change_protocol(struct ndpi_detection_module_
/* Matching on Content-Type.
OCSP: application/ocsp-request, application/ocsp-response
*/
- if(strncmp((const char *)packet->content_line.ptr, "application/ocsp-", 17) == 0) {
+ if(packet->content_line.len > 17 &&
+ strncmp((const char *)packet->content_line.ptr, "application/ocsp-", 17) == 0) {
NDPI_LOG_DBG2(ndpi_struct, "Found OCSP\n");
ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_OCSP, NDPI_PROTOCOL_HTTP, NDPI_CONFIDENCE_DPI);
}