HTB22889: XSS in Rating-Widget wordpress plugin

[advisory@xxxxxxxxxxx]

Vulnerability ID: HTB22889
Reference: 
http://www.htbridge.ch/advisory/xss_in_rating_widget_wordpress_plugin.html
Product: Rating-Widget wordpress plugin
Vendor: Vova Feldman ( http://rating-widget.com/ ) 
Vulnerable Version: 1.3.1
Vendor Notification: 03 March 2011 
Vulnerability Type: XSS (Cross Site Scripting)
Risk level: Medium 
Credit: High-Tech Bridge SA - Ethical Hacking & Penetration Testing 
(http://www.htbridge.ch/) 

Vulnerability Details:
The vulnerability exists due to failure in the 
"/wp-content/plugins/rating-widget/view/availability_options.php" script to 
properly sanitize user-supplied input in "selected_key" variable when 
register_globals is on.
User can execute arbitrary JavaScript code within the vulnerable application.
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.

The following PoC is available:


http://[host]/wp-content/plugins/rating-widget/view/availability_options.php?selected_key=%3Cscript%3Ealert%28%22XSS%22%29;%3C/script%3E