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Category:   Application (Multimedia)  >   Microsoft DirectX Vendors:   Microsoft
Microsoft DirectX Graphics Kernel Driver Bugs Let Local Users Gain Elevated Privileges
SecurityTracker Alert ID:  1041461
SecurityTracker URL:  http://securitytracker.com/id/1041461
CVE Reference:   CVE-2018-8400, CVE-2018-8401, CVE-2018-8405, CVE-2018-8406   (Links to External Site)
Date:  Aug 14 2018
Impact:   User access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 8.1, RT 8.1, 2012 R2, 2016, 10, 10 Version 1607, 10 Version 1703, 10 Version 1709, 10 Version 1803
Description:   Several vulnerabilities were reported in Microsoft DirectX. A local user can obtain elevated privileges on the target system.

A local user can run a specially crafted application to trigger an object memory handling error in the DirectX graphics kernel (DXGKRNL) driver and run processes on the target system with elevated privileges.

RanchoIce and ChenNan of Tencent ZhanluLab (via Trend Micro's Zero Day Initiative) and Communications Security Establishment reported these vulnerabilities.

Impact:   A local user can obtain elevated privileges on the target 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-2018-8400
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8401
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8405
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8406

Vendor URL:  portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8400 (Links to External Site)
Cause:   Access control error
Underlying OS:  Windows (2012), Windows (2016), Windows (8), Windows (10)

Message History:   None.


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