Release Date: March 10, 2016
Component Type: Third party extension. This extension is not a part of the TYPO3 default installation.
Affected Versions: version 2.5.3 and below
Vulnerability Type: SQL Injection
Severity: High
Suggested CVSS v2.0: AV:N/AC:L/Au:S/C:C/I:C/A:N/E:F/RL:O/RC:C (What's that?)
Problem Description: Failing to properly sanitize user-supplied input, the extension is vulnerable to SQL Injection. A valid backend login with permission to access the plugin settings is required to exploit this vulnerability.
Solution: An updated version 2.5.4 is available from the TYPO3 Extension Manager and at https://typo3.org/extensions/repository/download/chgallery/2.5.4/t3x/. Users of the extension are advised to update the extension as soon as possible.
Credits: Credits go to Wouter van Dongen 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.