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Category:   Application (Generic)  >   Microsoft Hyper-V Vendors:   Microsoft
Microsoft Hyper-V ACL Flaw Lets Local Users Bypass Security Restrictions
SecurityTracker Alert ID:  1033496
SecurityTracker URL:  http://securitytracker.com/id/1033496
CVE Reference:   CVE-2015-2534   (Links to External Site)
Date:  Sep 8 2015
Impact:   Host/resource access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in Microsoft Hyper-V. A local user can bypass security restrictions.

Hyper-V does not properly apply access control list (ACL) configuration settings. A local user can run a specially crafted application to cause Hyper-V to permit unintended network traffic.

Systems with the Hyper-V role enabled are affected.

Impact:   A local user can bypass security controls and pass network traffic on the target system.
Solution:   The vendor has issued a fix.

Windows 8.1 for x64-based Systems:

https://www.microsoft.com/downloads/details.aspx?familyid=20cc65d8-3953-49d9-b765-865d0878d7b3

Windows Server 2012 R2:

https://www.microsoft.com/downloads/details.aspx?familyid=55ef13b2-a4bc-4adb-96e9-2b8f1dc7af29

Windows Server 2012 R2:

https://www.microsoft.com/downloads/details.aspx?familyid=55ef13b2-a4bc-4adb-96e9-2b8f1dc7af29

The Microsoft advisory is available at:

https://technet.microsoft.com/library/security/ms15-105

Vendor URL:  technet.microsoft.com/library/security/ms15-105 (Links to External Site)
Cause:   Access control error
Underlying OS:  Windows (2012), Windows (8), Windows (10)
Underlying OS Comments:  8.1, 2012 R2, 10

Message History:   None.


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