Issue #9313, Asterisk crash on SIP return code 0 (reported by qwerty1979) (ASA-2007...

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@59037 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index 3e11aee05ce15fd917bc922d5590648d1a85dee0..e925e5dbca0c2917106803abd10185b332f6ae85 100644 (file)
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -14612,6 +14612,10 @@ static int handle_request(struct sip_pvt *p, struct sip_request *req, struct soc
                if (sscanf(e, "%d %n", &respid, &len) != 1) {
                        ast_log(LOG_WARNING, "Invalid response: '%s'\n", e);
                } else {
+                       if (respid <= 0) {
+                               ast_log(LOG_WARNING, "Invalid SIP response code: '%d'\n", respid);
+                               return 0;
+                       }
                        /* More SIP ridiculousness, we have to ignore bogus contacts in 100 etc responses */
                        if ((respid == 200) || ((respid >= 300) && (respid <= 399)))
                                extract_uri(p, req);