[sr-dev] git:5.5:ccd29983: nathelper: check length on new condition inside replace_sdp_ip()

Daniel-Constantin Mierla miconda at gmail.com
Tue Jun 15 10:00:41 CEST 2021


Module: kamailio
Branch: 5.5
Commit: ccd29983f538d13de3f5d07584d45020ca75f174
URL: https://github.com/kamailio/kamailio/commit/ccd29983f538d13de3f5d07584d45020ca75f174

Author: Daniel-Constantin Mierla <miconda at gmail.com>
Committer: Daniel-Constantin Mierla <miconda at gmail.com>
Date: 2021-06-15T10:00:09+02:00

nathelper: check length on new condition inside replace_sdp_ip()

(cherry picked from commit 521485c8f25f55cb3045ab2b33232c7026d8527d)

---

Modified: src/modules/nathelper/nathelper.c

---

Diff:  https://github.com/kamailio/kamailio/commit/ccd29983f538d13de3f5d07584d45020ca75f174.diff
Patch: https://github.com/kamailio/kamailio/commit/ccd29983f538d13de3f5d07584d45020ca75f174.patch

---

diff --git a/src/modules/nathelper/nathelper.c b/src/modules/nathelper/nathelper.c
index 9512834d0e..1392a0af2a 100644
--- a/src/modules/nathelper/nathelper.c
+++ b/src/modules/nathelper/nathelper.c
@@ -1655,7 +1655,7 @@ static inline int replace_sdp_ip(
 		hasreplaced = 1;
 		body1 = body2;
 	}
-	if(!hasreplaced && memcmp("a=rtcp", line, 6) != 0) {
+	if(!hasreplaced && linelen>=6 && memcmp("a=rtcp", line, 6)!=0) {
 		LM_ERR("can't extract '%s' IP from the SDP\n", line);
 		return -1;
 	}




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