upward bound checking for port string to int conversion

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@218687 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index d9175a8087e81a0efadc15eac491bcc47d240d4a..6c635252ee2b23e405db09b9f8c339726a0ca03c 100644 (file)
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -3211,7 +3211,7 @@ static int proxy_update(struct sip_proxy *proxy)
 static int port_str2int(const char *pt, unsigned int standard)
 {
        int port = standard;
-       if (ast_strlen_zero(pt) || (sscanf(pt, "%30d", &port) != 1) || (port < 0)) {
+       if (ast_strlen_zero(pt) || (sscanf(pt, "%30d", &port) != 1) || (port < 1) || (port > 65535)) {
                port = standard;
        }