Vulnerability ID: HTB22621 Reference: http://www.htbridge.ch/advisory/xss_vulnerability_in_lantern_cms_1.html Product: Lantern CMS Vendor: Lantern ( http://www.lanterncms.com/www/html/7-home-page.asp ) Vulnerable Version: Current at 18.09.2010 and Probably Prior Versions Vendor Notification: 22 September 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 login script to properly sanitize user-supplied input in "intPassedLocationID" 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: http://host/www/html/11-login.asp?intPassedLocationID=57%27%22%3E%3Cscript%3Ealert%2834%29%3C/script%3E