Merged revisions 325275 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.4

........
  r325275 | twilson | 2011-06-28 15:03:19 -0500 (Tue, 28 Jun 2011) | 2 lines

  Don't leak SIP username information
........

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.2@325277 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index 2981eb6dce2126f516c7e0f0cf9fd0ef3e678601..328643e844be527f8f9c52b11437233cd3e8eb71 100644 (file)
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -13436,9 +13436,9 @@ static void transmit_fake_auth_response(struct sip_pvt *p, int sipmethod, struct
 {
        /* We have to emulate EXACTLY what we'd get with a good peer
         * and a bad password, or else we leak information. */
-       const char *response = "407 Proxy Authentication Required";
-       const char *reqheader = "Proxy-Authorization";
-       const char *respheader = "Proxy-Authenticate";
+       const char *response = "401 Unauthorized";
+       const char *reqheader = "Authorization";
+       const char *respheader = "WWW-Authenticate";
        const char *authtoken;
        struct ast_str *buf;
        char *c;
@@ -13453,23 +13453,18 @@ static void transmit_fake_auth_response(struct sip_pvt *p, int sipmethod, struct
                [K_LAST] = { NULL, NULL}
        };
 
-       if (sipmethod == SIP_REGISTER || sipmethod == SIP_SUBSCRIBE) {
-               response = "401 Unauthorized";
-               reqheader = "Authorization";
-               respheader = "WWW-Authenticate";
-       }
        authtoken = get_header(req, reqheader);
        if (req->ignore && !ast_strlen_zero(p->randdata) && ast_strlen_zero(authtoken)) {
                /* This is a retransmitted invite/register/etc, don't reconstruct authentication
                 * information */
-               transmit_response_with_auth(p, response, req, p->randdata, 0, respheader, 0);
+               transmit_response_with_auth(p, response, req, p->randdata, reliable, respheader, 0);
                /* Schedule auto destroy in 32 seconds (according to RFC 3261) */
                sip_scheddestroy(p, DEFAULT_TRANS_TIMEOUT);
                return;
        } else if (ast_strlen_zero(p->randdata) || ast_strlen_zero(authtoken)) {
                /* We have no auth, so issue challenge and request authentication */
                set_nonce_randdata(p, 1);
-               transmit_response_with_auth(p, response, req, p->randdata, 0, respheader, 0);
+               transmit_response_with_auth(p, response, req, p->randdata, reliable, respheader, 0);
                /* Schedule auto destroy in 32 seconds */
                sip_scheddestroy(p, DEFAULT_TRANS_TIMEOUT);
                return;
@@ -13728,7 +13723,7 @@ static enum check_auth_result register_verify(struct sip_pvt *p, struct sockaddr
                        }
                }
        }
-       if (!peer && sip_cfg.alwaysauthreject) {
+       if (!peer && sip_cfg.alwaysauthreject && ast_test_flag(&p->flags[1], SIP_PAGE2_REGISTERTRYING)) {
                /* If we found a peer, we transmit a 100 Trying.  Therefore, if we're
                 * trying to avoid leaking information, we MUST also transmit the same
                 * response when we DON'T find a peer. */