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Category:   Application (Forum/Board/Portal)  >   MediaWiki Vendors:   wikipedia.sourceforge.net
MediaWiki Multiple Flaws Let Remote Users Modify Data, Obtain Potentially Sensitive Information, and Conduct Cross-Site Scripting Attacks and Let Local Users Obtain Passwords
SecurityTracker Alert ID:  1039812
SecurityTracker URL:  http://securitytracker.com/id/1039812
CVE Reference:   CVE-2017-0361, CVE-2017-8808, CVE-2017-8809, CVE-2017-8810, CVE-2017-8811, CVE-2017-8812, CVE-2017-8814, CVE-2017-8815, CVE-2017-9841   (Links to External Site)
Date:  Nov 16 2017
Impact:   Disclosure of authentication information, Disclosure of system information, Disclosure of user information, Execution of arbitrary code via network, Modification of system information, Modification of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   Multiple vulnerabilities were reported in MediaWiki. A remote user can modify data on the target system. A local user can obtain passwords on the target system. A remote user can obtain potentially sensitive information on the target system. A remote user can conduct cross-site scripting attacks.

A remote user can create a specially crafted URL for the target site that, when loaded by the target user, will cause the 'api.php' script to download a file containing shell commands [CVE-2017-8809]. The file will be served by the target site.

The BotPassword component does not limit login attempts. A remote user can conduct brute-force password guessing attacks.

A remote user can attempt to login to a private wiki to determine valid usernames on the target system [CVE-2017-8810].

The software does not properly filter HTML code from user-supplied input before displaying the input. A remote user can 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.

The 'includes/MWException.php' script is affected when $wgShowExceptionDetails = false [CVE-2017-8808].

A remote user can invoke raw message parameter expansion to mangle HTML [CVE-2017-8811].

A remote user can inject greater than ('>') characters in a headline id attribute [CVE-2017-8812].

A remote user can cause the language converter to replace text inside tags [CVE-2017-8814].

A remote user can cause the language converter to inject attribute values via glossary rules [CVE-2017-8815)].

A local user can view plaintext passwords in the 'api.log' file [CVE-2017-0361]. Version 1.29 is affected.

The 'composer.json' component includes a vulnerable version of PHPUnit [CVE-2017-9841]. Versions 1.27 and 1.28 are affected.

Abdullah Hussam and Tom Hutchison each reported a vulnerability.

Impact:   A remote user can modify data on the target system.

A local user can obtain passwords on the target system.

A remote user can obtain potentially sensitive information on the target system.

A remote user can conduct brute-force password guessing attacks.

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.

Solution:   The vendor has issued a fix (1.27.4, 1.28.3, 1.29.2).

The vendor advisory is available at:

https://lists.wikimedia.org/pipermail/mediawiki-announce/2017-November/000216.html

Vendor URL:  www.wikimedia.org (Links to External Site)
Cause:   Access control error, Input validation error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   None.


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