Joomla! 'lang' Parameter Reflected Cross Site Scripting Vulnerability

Summary
This host is installed with Joomla and is prone to cross site scripting vulnerability.
Impact
Successful exploitation will allow attacker to execute arbitrary HTML and script code in a user's browser session in the context of an affected site. Impact Level: Application
Solution
Upgrade to Joomla version 3.1.6 or later, For updates refer to www.joomla.org
Insight
Input passed via the 'lang' parameter to '/libraries/idna_convert/example.php' script is not properly sanitized before being returned to the user.
Affected
Joomla version 3.1.5 and prior.
Detection
Send a crafted data via HTTP GET request and check whether it is able to read cookie or not.
References