TYPO3-EXT-SA-2016-033: Unvalidated Redirect in extension "TC Directmail" (tcdirectmail)

It has been discovered that the extension "TC Directmail" (tcdirectmail) is susceptible to Unvalidated Redirect.
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 Severity: Low Suggested CVSS v2.0: AV:N/AC:L/Au:N/C:N/I:P/A:N/E:F/RL:O/RC:C (What's that?) 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. General advice: Follow the recommendations that are given in the TYPO3 Security Guide. Please subscribe to the typo3-announce mailing list to receive future Security Bulletins via E-mail.