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Category:   OS (Microsoft)  >   Windows DLL (Any) Vendors:   Microsoft
Microsoft Windows Device Guard File Signature Validation Flaw Lets Remote Users Bypass Security Restrictions on the Target System
SecurityTracker Alert ID:  1039992
SecurityTracker URL:  http://securitytracker.com/id/1039992
CVE Reference:   CVE-2017-11899   (Links to External Site)
Date:  Dec 13 2017
Impact:   Host/resource access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 10, 10 Version 1511, 2016, 10 Version 1607, 10 Version 1703, 10 Version 1709
Description:   A vulnerability was reported in Microsoft Windows Device Guard. A remote user can bypass security controls on the target system.

Microsoft Device Guard does not properly validate files. A remote user can cause an unsigned file to be accepted as a signed file by the target system.

James Forshaw of Google Project Zero reported this vulnerability.

Impact:   A remote user can bypass security controls on the target system.
Solution:   The vendor has issued a fix.

The Microsoft advisory is available at:

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11899

Vendor URL:  portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11899 (Links to External Site)
Cause:   Input validation error

Message History:   None.


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