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Category:   Application (Directory)  >   Microsoft Active Directory Vendors:   Microsoft
Microsoft Active Directory Federation Services Input Validation Flaw Permits Cross-Site Scripting Attacks
SecurityTracker Alert ID:  1032526
SecurityTracker URL:  http://securitytracker.com/id/1032526
CVE Reference:   CVE-2015-1757   (Links to External Site)
Date:  Jun 9 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): Active Directory Federation Services 2.0, 2.1
Description:   A vulnerability was reported in Microsoft Active Directory Federation Services. A remote user can conduct cross-site scripting attacks.

Active Directory Federation Services (AD FS) 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 Microsoft Active Directory 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.

Tate Hansen from FishNet Security and John Hollenberger 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 Microsoft Active Directory 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.

A patch matrix is available in the vendor advisory.

The Microsoft advisory is available at:

https://technet.microsoft.com/library/security/ms15-062

Vendor URL:  technet.microsoft.com/library/security/ms15-062 (Links to External Site)
Cause:   Input validation error
Underlying OS:  Windows (2008), Windows (2012)
Underlying OS Comments:  2008 SP2, 2008 R2 SP1, 2012

Message History:   None.


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