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Category:   Application (Generic)  >   Microsoft Hyper-V Vendors:   Microsoft
Microsoft Hyper-V Lets Local Users on a Guest System Gain Elevated Privileges on the Host System
SecurityTracker Alert ID:  1035538
SecurityTracker URL:  http://securitytracker.com/id/1035538
CVE Reference:   CVE-2016-0088, CVE-2016-0089, CVE-2016-0090   (Links to External Site)
Date:  Apr 13 2016
Impact:   User access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   Several vulnerabilities were reported in Microsoft Hyper-V. A local user on the guest system can obtain potentially sensitive information or gain elevated privileges on the host system.

A local user on the guest system can gain elevated privileges on the host system [CVE-2016-0088].

A local user on the guest system can obtain potentially sensitive information on the host system [CVE-2016-0089, CVE-2016-0090].

Kostya Kortchinsky of the Google Security Team and Thomas Garnier reported these vulnerabilities.

Impact:   A local user on the guest system can gain elevated privileges on the host system.

A local user on the guest system can obtain potentially sensitive information on the host system.

Solution:   The vendor has issued a fix.

Windows 8.1 for x64-based Systems:

https://www.microsoft.com/downloads/details.aspx?familyid=558c3552-1616-4f80-9784-a356f863bf51

Windows Server 2012:

https://www.microsoft.com/downloads/details.aspx?familyid=8a8fed1d-07ad-48bc-b576-cc9697510ee7

Windows Server 2012 R2:

https://www.microsoft.com/downloads/details.aspx?familyid=0a619af8-90c8-4bbc-81c5-0acd9a53d8cb

Windows Server 2012:

https://www.microsoft.com/downloads/details.aspx?familyid=8a8fed1d-07ad-48bc-b576-cc9697510ee7

Windows Server 2012 R2:

https://www.microsoft.com/downloads/details.aspx?familyid=0a619af8-90c8-4bbc-81c5-0acd9a53d8cb

The Microsoft advisory is available at:

https://technet.microsoft.com/library/security/ms16-045

Vendor URL:  technet.microsoft.com/library/security/ms16-045 (Links to External Site)
Cause:   Input validation error
Underlying OS:  Windows (2012), Windows (8), Windows (10)
Underlying OS Comments:  8.1, 2012 R2, 10; and prior service packs

Message History:   None.


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