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Category:   OS (Microsoft)  >   Windows DLL (Any) Vendors:   Microsoft
Windows Remote Desktop Virtual Host Certificate Validation Flaw Lets Local Users on a Guest System Gain Elevated Privileges on the Host System
SecurityTracker Alert ID:  1039341
SecurityTracker URL:  http://securitytracker.com/id/1039341
CVE Reference:   CVE-2017-8714   (Links to External Site)
Date:  Sep 13 2017
Impact:   Root access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 8.1, 2012, 2012 R2, 2016, 10 Version 1607
Description:   A vulnerability was reported in Windows Remote Desktop Virtual Host. A local user on the guest system can gain elevated privileges on the host system.

A local user on the guest system can issue a specially crafted certificate to cause the target VM Host Agent Service to execute arbitrary code on the host system.

Jared S. Candelaria reported this vulnerability.

Impact:   A local user on the guest system can gain elevated privileges on the host 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-2017-8714
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4038782
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4038786
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4038792
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4038793
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4038799

Vendor URL:  portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8714 (Links to External Site)
Cause:   Input validation error

Message History:   None.


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