Important Security-Bulletin Pre-Announcement

The TYPO3 security team has identified a critical security issue in the TYPO3 v4 Core.

The following branches are affected by the vulnerability:

* TYPO3 4.3
* TYPO3 4.4
* TYPO3 4.5
* TYPO3 4.6

Only TYPO3 installations which use the frontend login functionality are affected by this vulnerability.

Newer TYPO3 versions (4.7.0 or higher) are NOT affected!

A TYPO3 4.5.40 release containing a security fix will be published the day after tomorrow, Thursday 19th of February at about 10:00 am CET.

If possible, we will provide patches for not supported releases.

Since this is a very important security fix, please be prepared to update your TYPO3 installations on Thursday.

Until the advisory is out, please understand that we cannot provide any further information.

CVSS v2.0 data on the to be released bulletin:

Base AV:N/AC:L/Au:N/C:P/I:P/A:N | Temporal E:F/RL:O/RC:C

Cross-Site Scripting in extension Gridelements (gridelements)

Release Date: February 17, 2015

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

Affected Versions: gridelements: Versions 3.0.0, 2.1.2 and below

Vulnerability Type: Cross-Site Scripting

Severity: Medium

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

CVE: not assigned yet

Problem Description: The extension fails to properly escape user input in HTML context. Backend Editor permissions with access to any text field within any data table are required to exploit this vulnerability.

Solution: Updated versions 3.0.1 and 2.1.3 are available from the TYPO3 extension manager and at http://typo3.org/extensions/repository/download/gridelements/3.0.1/t3x/ and http://typo3.org/extensions/repository/download/gridelements/2.1.3/t3x/. Users of the extension are advised to update the extension as soon as possible.

Credits: Credits go to Sven Jürgens 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.