Component Type: Third party extension. This extension is not a part of the TYPO3 default installation.
Affected Versions: Version 0.9.1 and below
Vulnerability Type: SQL Injection
Release Date: 03.08.2011
Problem Description: Failing to sanitize GET/ POST data, the extension is susceptible to multiple SQL Injection vulnerabilities.
Solution: An updated version 0.9.2 is available from the TYPO3 extension manager and attypo3.org/extensions/repository/view/jm_gallery/0.9.2/. Users of the extension are advised to update the extension immediately.
Important Note: It has been reported to the TYPO3 Security Team that this vulnerability has been exploited in the wild.
Credits: Thanks to Ivan Kartolo who discovered and reported the issue and especially for providing a fixed version of the extension.