[MajorSecurity Advisory #27]ToendaCMS - Cross Site Scripting Issue

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[MajorSecurity Advisory #27]ToendaCMS - Cross Site Scripting Issue

Details
=======
Product: Toenda CMS
Affected Version: <=1.0.3(stable) and 1.1
Immune Version: None known
Security-Risk: low
Remote-Exploit: yes
Vendor-URL: http://www.toenda.com/
Vendor-Status: informed
Advisory-Status: published

Credits
============
Discovered by: David Vieira-Kurz
http://www.majorsecurity.de

Original Advisory:
============
http://www.majorsecurity.de/index_en2.php?major_rls=major_rls27

Introduction
============
"The toendaCMS Content Management and Weblogging tool gives you a modern,
professional publishing system, based on an SQL and/or XML database.." (from Vendor's page)

More Details
============
Input passed directly to the "?s" parameter in "/toendaCMS/" is not properly sanitised before being returned to the 
user.
This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of an affected 
site.
It works with a script code like this:

> '><script%20%0a%0d>alert(123456789)%3B</script>

Fix
===
None known.

Solution
=============
Edit the source code to ensure that input is properly sanitised.
You should work with "htmlspecialchars()" or "htmlentities()" php-function to ensure that html tags
are not going to be executed. Further it is recommend to set off the "register globals" option in the
"php.ini" on your webserver.

Example:
<?php
  $pass = htmlentities($_POST['pass']);
  echo htmlspecialchars("<script");
  $id = intval($_POST['id']);
?>

Set "register_globals" to "Off".

History/Timeline
================
19.07.2006  discovery of the vulnerability
20.07.2006  additional tests with other versions
21.07.2006  contacted Toenda Software Development(vendor) on their own BugTraq.
01.08.2006  after 10 days I got still no response to my advise on their own BugTraq.
02.08.2006  advisory is written
03.08.2006  advisory released

MajorSecurity
=======
MajorSecurity is a German penetration testing and hacking security project
which consists of only one person at the present time.
I am looking for a partnership.
You can find more Information on the MajorSecurity Project at
http://www.majorsecurity.de/