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Category:   Application (Forum/Board/Portal)  >   WordPress Vendors:   wordpress.org
WordPress Input Validation Flaw in 'wp-admin/plugins.php' Permits Cross-Site Scripting Attacks
SecurityTracker Alert ID:  1024337
SecurityTracker URL:  http://securitytracker.com/id/1024337
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Date:  Aug 13 2010
Impact:   Disclosure of authentication information, Disclosure of user information, Execution of arbitrary code via network, Modification of user information
Exploit Included:  Yes  
Version(s): 3.0.1; possibly other versions
Description:   A vulnerability was reported in WordPress. A remote user can conduct cross-site scripting attacks.

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 WordPress 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 "checked[0]" parameter in "wp-admin/plugins.php" is affected when the "action" parameter is set to "delete-selected".

David Vieira-Kurz of MajorSecurity reported this vulnerability.

Impact:   A remote user can access the target user's cookies (including authentication cookies), if any, associated with the site running the WordPress 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:   No solution was available at the time of this entry.
Vendor URL:  www.wordpress.org/ (Links to External Site)
Cause:   Input validation error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   None.


 Source Message Contents

Subject:  [MajorSecurity SA-080]WordPress 3.0.1 - Cross Site Scripting Issue

[MajorSecurity SA-080]WordPress 3.0.1 - Cross Site Scripting Issue



Details

=============

Product: WordPress 3.0.1

Security-Risk: low

Remote-Exploit: yes

Vendor-URL: http://www.wordpress.org/

Advisory-Status: published



Credits

=============

Discovered by: David Vieira-Kurz of MajorSecurity



Affected Products:

=============

WordPress 3.0.1

Prior versions may also be vulnerable



Description

=============

"WordPress is web software you can use to create a beautiful website or blog." - from wordpress.org



More Details

=============

I have discovered some vulnerabilities in WordPress 3.0.1, which can be exploited by malicious people to conduct reflected cross-site scripting attacks. Input passed directly to the "checked[0]" parameter in "wp-admin/plugins.php" when the "action" parameter is set to "delete-selected" is not properly sanitised before being stored and returned to the user. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of an affected site.



Solution

=============

Web applications should never trust on user generated input and therefore sanatize all input. Edit the source code to ensure that input is properly sanitised.



MajorSecurity

================

MajorSecurity is a German sourcecode audit and penetration testing company which focuses on (web-)application security. We offer professional source code audit, penetrationstest and pci dss compliance tests. Visit us at http://www.majorsecurity.net/source-code-audit.php



Use of terms

================

Unaltered electronic reproduction of this advisory is permitted. For all other reproduction or publication, in printing or otherwise, contact us for permission. Use of the advisory constitutes acceptance for use in an "as is" condition. All warranties are excluded. In no event shall MajorSecurity be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if MajorSecurity has been advised of the possibility of such damages.
 
 


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