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Category:   Application (Generic)  >   Microsoft Hyper-V Vendors:   Microsoft
Microsoft Hyper-V Access Control Bug Lets Local Users on a Guest System Gain Elevated Privileges on the Guest System
SecurityTracker Alert ID:  1041096
SecurityTracker URL:  http://securitytracker.com/id/1041096
CVE Reference:   CVE-2018-8219   (Links to External Site)
Date:  Jun 12 2018
Impact:   User access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 2016, 10 Version 1607, 10 Version 1703, 10 Version 1709, 10 Version 1803
Description:   A vulnerability was reported in Microsoft Hyper-V. A local user on the guest system can gain elevated privileges on the guest system.

A local user on the guest system can exploit a privilege level access control flaw in Windows Hyper-V instruction emulation to gain elevated privileges on the guest system.

The host system is not affected.

Microsoft Hyper-V Development Team reported this vulnerability.

Impact:   A local user on the guest system can gain elevated privileges on the guest system.
Solution:   The vendor has issued a fix.

The Microsoft advisories are available at:

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8219
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4284819
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4284835
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4284874
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4284880

Vendor URL:  portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8219 (Links to External Site)
Cause:   Access control error
Underlying OS:  Windows (2016), Windows (10)

Message History:   None.


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