Facebook URL Redirect Vulnerability
Posted: 1/3/11 by komz in Etiquetas: Facebook, facebook vulnerability, remote vulnerability, url compromised, Vulnerabilidades1. Summary: Once the victim clicks on a specially crafted Facebook URL they can be redirected to a malicious website.
2. Description: Facebook applications use of 'track.php?r=' doesn't sanitize the redirection input properly. This allows an attacker to input any URL that a victim will get redirected too. It is not required for the victim to be login to Facebook for this attack to work.
The following is an example of a vulnerable URL:
http://apps.facebook.com/truthsaboutu/track.php?r=http://www.securitypentest.com
The following Google query can be used to find vulnerable URLs:
site:facebook.com inurl:"track.php?" inurl:"r="
3. Impact: Potentially allow an attacker to compromise a victim’s Facebook account and/or computer system.
4. Affected Products: www.facebook.com
5. Solution: None
fuente:securitypentest.com
