Module: kamailio
Branch: 4.3
Commit: a56e5980e572357f9d3c0152623850c34ddb8963
URL: 
https://github.com/kamailio/kamailio/commit/a56e5980e572357f9d3c0152623850c34ddb8963

Author: Stefan Mititelu <stefan.mitit...@1and1.ro>
Committer: Stefan Mititelu <stefan.mitit...@1and1.ro>
Date: 2015-11-03T16:56:07+02:00

uac: Sanity checks

Sanity checks for decode_uri(). Add NULL and len > 0 checks.
Segfault when vsf parameter was empty in the Route: header (e.g 'vsf=').

(cherry picked from commit d956f397c8cea4774e5941bdad8f76ecc44acdd5)

---

Modified: modules/uac/replace.c

---

Diff:  
https://github.com/kamailio/kamailio/commit/a56e5980e572357f9d3c0152623850c34ddb8963.diff
Patch: 
https://github.com/kamailio/kamailio/commit/a56e5980e572357f9d3c0152623850c34ddb8963.patch

---

diff --git a/modules/uac/replace.c b/modules/uac/replace.c
index 1c30fe2..354b2f9 100644
--- a/modules/uac/replace.c
+++ b/modules/uac/replace.c
@@ -128,6 +128,22 @@ static inline int decode_uri( str *src , str *dst)
        int i,j;
        signed char c;
 
+       /* sanity checks */
+       if (!src) {
+               LM_ERR("NULL src\n");
+               return -1;
+       }
+
+       if (!dst) {
+               LM_ERR("NULL dst\n");
+               return -1;
+       }
+
+       if (!src->s || src->len == 0) {
+               LM_ERR("empty src\n");
+               return -1;
+       }
+
        /* Count '-' at end and disregard them */
        for( n=0,i=src->len-1; src->s[i]=='-'; i--)
                n++;


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