Blind SQL Injection vulnerability in extension Calendar Base (cal)

It has been discovered that the extension Calendar Base (cal) is vulnerable to Blind SQL Injection.

Release Date: December 1, 2009

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

Affected Versions: Version 1.2.0 and all versions below

Vulnerability Type: Blind SQL Injection

Severity: High

Problem Description: Failing to filter user input the extension is open to Blind SQL Injection. The vulnerability allows remote website users to execute arbitrary commands on the TYPO3 database.

Solution: An updated version 1.2.1 is available from the TYPO3 extension manager and at Users of the extension are advised to update the extension as soon as possible.

Credits: Credits go to Michael Tschannen who discovered and reported the issue.

General advice: Follow the recommendations that are given in the TYPO3 Security Cookbook. Please subscribe to the typo3-announce mailing list to receive future Security Bulletins via E-mail.