Vulnerability ID: HTB22931 Reference: http://www.htbridge.ch/advisory/xss_vulnerability_in_interra_blog_machin e.html Product: InTerra Blog Machine Vendor: InTerra Blog Machine Team ( http://code.google.com/p/interra/ ) Vulnerable Version: 1.84 and probably prior versions Vendor Notification: 31 March 2011 Vulnerability Type: Stored XSS (Cross Site Scripting) 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 "actions/add.php" script to properly sanitize user-supplied input in "subject" 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: