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Category:   Application (Forum/Board/Portal)  >   MediaWiki Vendors:   wikipedia.sourceforge.net
MediaWiki Input Validation Flaws Permit Cross-Site Scripting and Clickjacking Attacks
SecurityTracker Alert ID:  1030660
SecurityTracker URL:  http://securitytracker.com/id/1030660
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Date:  Aug 1 2014
Impact:   Disclosure of authentication information, Disclosure of user information, Execution of arbitrary code via network, Modification of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to versions 1.19.18, 1.22.9, 1.23.2
Description:   Several vulnerabilities were reported in MediaWiki. A remote user can conduct cross-site scripting attacks. A remote user can conduct clickjacking attacks.

The software does not properly filter HTML code from user-supplied input before displaying the input. A remote user can create a specially crafted URL that, when loaded by a target user, will cause arbitrary scripting code to be executed by the target user's browser. The code will originate from the site running the MediaWiki software and will run in the security context of that site. As a result, the code will be able to access the target user's cookies (including authentication cookies), if any, associated with the site, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.

A remote user can create a specially crafted, all alphanumeric SWF file that, when processed via the target JSONP callback API, will bypass same origin policy, initiate arbitrary requests from the target user to the target domain, and provide data to the remote user [reported as CVE-2014-4671 as affecting Adobe Flash Player].

A remote user can conduct click-jacking attacks related to OutputPage and ParserOutput.

Impact:   A remote user can access the target user's cookies (including authentication cookies), if any, associated with the site running the MediaWiki software, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.

A remote user can conduct clickjacking attacks.

Solution:   The vendor has issued a fix (1.19.18, 1.22.9, 1.23.2).

The vendor's advisory is available at:

http://lists.wikimedia.org/pipermail/mediawiki-announce/2014-July/000157.html

Vendor URL:  lists.wikimedia.org/pipermail/mediawiki-announce/2014-July/000157.html (Links to External Site)
Cause:   Input validation error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   None.


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