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Category:   Application (Forum/Board/Portal)  >   WordPress Vendors:   wordpress.org
WordPress Input Validation Flaws Let Remote Conduct Cross-Site Scripting Attacks
SecurityTracker Alert ID:  1033037
SecurityTracker URL:  http://securitytracker.com/id/1033037
CVE Reference:   CVE-2015-5622, CVE-2015-5623   (Links to External Site)
Date:  Jul 23 2015
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): 4.2.2 and prior
Description:   Two vulnerabilities were 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.

A remote authenticated user with Contributor or Author roles can trigger this flaw [CVE-2015-5622]. Jon Cave reported this vulnerability.

A remote authenticated user with Subscriber permissions can trigger this flaw via the Quick Draft feature to create a draft [CVE-2015-5623].

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:   The vendor has issued a fix (4.2.3).

The vendor's advisory is available at:

https://wordpress.org/news/2015/07/wordpress-4-2-3/

Vendor URL:  wordpress.org/news/2015/07/wordpress-4-2-3/ (Links to External Site)
Cause:   Input validation error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   None.


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