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Insecure Unserialize and SQL Injection in extension "Code Highlighter" (mh_code_highlighter)

November 14, 2016

Author: Nicole Cordes
Keywords: TYPO3, security, typo3-ext-sa-2016-029, extension, mh_code_highlighter, Insecure Unserialize, SQL Injection

It has been discovered that the extension "Code Highlighter" (mh_code_highlighter) is susceptible to Insecure Unserialize and SQL Injection.

Release Date: November 14, 2016

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

Affected Versions: version 1.2.10 and below

Vulnerability Type: Insecure Unserialize, SQL Injection

Severity: Medium

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

Problem Description: The extension unserializes strings from untrusted external source. Furthermore it fails to properly sanitize incoming data and is vulnerable to SQL Injection. For both vulnerabilities a backend user with access to the extension module is needed.

Solution: An updated version 1.2.11 is available from the TYPO3 Extension Manager and at https://typo3.org/extensions/repository/download/mh_code_highlighter/1.2.11/t3x/. Users of the extension are advised to update the extension as soon as possible.

Credits: Credits go to Marc Hörsken 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.


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