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Category:   Application (Directory)  >   Microsoft Active Directory Vendors:   Microsoft
Microsoft Active Directory Federation Services Logout Failure Lets Local Users Access the Target User's Account
SecurityTracker Alert ID:  1032115
SecurityTracker URL:  http://securitytracker.com/id/1032115
CVE Reference:   CVE-2015-1638   (Links to External Site)
Date:  Apr 14 2015
Impact:   Disclosure of system information, Disclosure of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): FS 3.0
Description:   A vulnerability was reported in Microsoft Active Directory. A local user can access the target user's account in certain cases.

The system does not properly logout an authenticated user. A local user can re-open the application from an open browser window after the target user has ostensibly logged out to obtain potentially sensitive information.

Impact:   A local user can access potentially sensitive information from the target user's account in certain cases.
Solution:   The vendor has issued the following fixes:

Windows Server 2012 R2:

https://www.microsoft.com/downloads/details.aspx?familyid=fd2b1364-5d29-476c-9d9a-fbb962cb9df3

Windows Server 2012 R2 (Server Core installation):

https://www.microsoft.com/downloads/details.aspx?familyid=fd2b1364-5d29-476c-9d9a-fbb962cb9df3

The Microsoft advisory is available at:

https://technet.microsoft.com/library/security/ms15-040

Vendor URL:  technet.microsoft.com/library/security/ms15-040 (Links to External Site)
Cause:   Access control error
Underlying OS:  Windows (2012)

Message History:   None.


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