Check Point Advisories

MediaWiki Parser Script Insertion (CVE-2006-2611)

Check Point Reference: CPAI-2006-202
Date Published: 14 Feb 2010
Severity: Medium
Last Updated: Sunday 14 February, 2010
Source:
Industry Reference:CVE-2006-2611
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description A Wiki is generally referred to a collaborative online system that allows many users to easily contribute content by creating web pages that have a common look and feel and that may be changed and revised at any time. MediaWiki is a popular implementation of the Wiki system. It uses a number of PHP scripts and a database as a back-end to accomplish this task. In general, users contribute content by creating or modifying a simplified version of HTML mark-up of a page, which is then parsed by the MediaWiki parser to generate real HTML, including mark-up, inter-page links, and so on. A vulnerability exists in the parser of the MediaWiki product. The flaw exists due to an insufficient sanitization of the user input. Exploitation of this flaw may allow a malicious user to inject script and HTML code into a page, thereby gaining the execution context of the page on a target user's browser. An attack exploiting this vulnerability will result in arbitrary Script code being executed on a target user's browser. The behavior of the target is dependent on the intented purpose of the malicious code. The execution of the injected script requires that the browser allows script execution from the domain that the malicious page resides on. Any such code execution will be within the security privileges allowed for that domain by the target browser.

Protection Overview

This protection will detect and block attempts to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R80 / R77 / R75

  1. In the IPS tab, click Protections and find the MediaWiki Parser Script Insertion protection using the Search tool and Edit the protection's settings.
  2. Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name:  Web Client Enforcement Violation.
Attack Information:  MediaWiki parser script insertion

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