#Active Directory Federation Services

**According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do?** In a web-based attack scenario, an attacker could host a website or server that contains a specially crafted file that is designed to exploit the vulnerability. However, an attacker would have no way to force the user to visit the website. Instead, an attacker would have to convince the user to click a link, typically by way of an enticement in an email or Instant Messenger message, and then convince the user to open the specially crafted file.

*How could an attacker exploit this vulnerability?* The ADFS (Active Directory Federation Services) services are vulnerable during the logout redirect request to cross-site scripting of the post logout redirect URI. An attacker who successfully exploited this vulnerability could leave an application using this ADFS library vulnerable to common XSS attacks.