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TYPO3-EXT-SA-2016-016: Multiple vulnerabilities in extension "http:BL Blocking" (mh_httpbl)

It has been discovered that the extension "http:BL Blocking" (mh_httpbl) is susceptible to SQL Injection and Cross-Site Scripting.

Release Date: May 31, 2016

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

Affected Versions: 1.1.7 and below

Vulnerability Type: SQL injection, Cross-Site Scripting

Severity: Medium

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

Problem Description: Failing to properly escape user input, the extension is susceptible to SQL Injection and Cross-Site Scripting. The SQL Injection vulnerability is exploitable only by user having access to the backend module.

Solution: An updated version 1.1.8 is available from the TYPO3 extension manager and at https://typo3.org/extensions/repository/download/mh_httpbl/1.1.8/t3x/. Users of the extension are advised to update the extension as soon as possible.

Credits: Thanks 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.