Module: kamailio Branch: 4.2 Commit: 3af67d8142691e89aa4f9d77898c5af4ba026cbf URL: https://github.com/kamailio/kamailio/commit/3af67d8142691e89aa4f9d77898c5af4...

Author: Stefan Mititelu stefan.mititelu@1and1.ro Committer: Stefan Mititelu stefan.mititelu@1and1.ro Date: 2015-11-03T16:52:03+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/3af67d8142691e89aa4f9d77898c5af4... Patch: https://github.com/kamailio/kamailio/commit/3af67d8142691e89aa4f9d77898c5af4...

---

diff --git a/modules/uac/replace.c b/modules/uac/replace.c index ccb2d46..bf54aad 100644 --- a/modules/uac/replace.c +++ b/modules/uac/replace.c @@ -142,6 +142,22 @@ 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++;