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Category:   Application (Forum/Board/Portal)  >   Joomla! Vendors:   joomla.org
Joomla! Input Validation Flaw in Login Module Lets Remote Conduct Cross-Site Scripting Attacks
SecurityTracker Alert ID:  1033541
SecurityTracker URL:  http://securitytracker.com/id/1033541
CVE Reference:   CVE-2015-6939   (Links to External Site)
Updated:  Sep 23 2015
Original Entry Date:  Sep 11 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): 3.4.0 - 3.4.3
Description:   A vulnerability was reported in Joomla!. A remote user can conduct cross-site scripting attacks.

The login module 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 Joomla! 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 vendor was notified on August 18, 2015.

cfreer 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 Joomla! 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 (3.4.4).

The vendor's advisory is available at:

http://developer.joomla.org/security-centre.html

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

Message History:   None.


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