Component Type: Third party extension. This extension is not a part of the TYPO3 default installation.

Affected Versions: 2.0.2 and below, 1.5.0 and below

Vulnerability Type: Cross-Site Scripting

Severity: Low

Suggested CVSS v2.0: AV:N/AC:L/Au:S/C:P/I:P/A:N/E:F/RL:O/RC:C (What's that?)

Problem Description: Failing to properly sanitize user input, the layout wizard provided by the extension gridelements is susceptible to Cross-Site Scripting. A valid backend user login with permission to access the layout wizard is required for this vulnerability to be exploited.

Solution: Updated versions 2.0.3 and 1.5.1 are available from the TYPO3 extension manager and at http://typo3.org/extensions/repository/download/gridelements/2.0.3/ and http://typo3.org/extensions/repository/download/gridelements/1.5.1/t3x/t3x/. Users of the extension are advised to update the extension as soon as possible.

Credits: Credits go to Security Team Member Georg Ringer who discovered and reported the issue.

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.