Release Date: November 14, 2016
Component Type: Third party extension. This extension is not a part of the TYPO3 default installation.
Affected Versions: version 3.1.2 and below
Vulnerability Type: Unvalidated Redirect
Problem Description: The extension rewrites the links within a test newsletter and uses an own eID script for redirects. It fails to ensure the integrity of the provided information and uses untrusted data.
Solution: An updated version 3.1.3 is available from the TYPO3 Extension Manager and at https://typo3.org/extensions/repository/download/tcdirectmail/3.1.3/t3x/. Users of the extension are advised to update the extension as soon as possible.
Credits: Credits go to the security team member Valentin Despa who discovered and reported the vulnerability.