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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:  1040660
SecurityTracker URL:  http://securitytracker.com/id/1040660
CVE Reference:   CVE-2018-0966   (Links to External Site)
Date:  Apr 10 2018
Impact:   Modification of system information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 2016, 10, 10 Version 1511, 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.

A remote user can cause an unsigned file to appear to be signed, bypassing security controls on the target system that rely on the signature to determine trust.

James Forshaw of Google Project Zero reported this vulnerability.

Impact:   A remote user can cause an unsigned file to appear to be signed.
Solution:   The vendor has issued a fix.

The Microsoft advisories are available at:

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0966
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4093109
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4093111
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4093119
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4093107
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4093112

Vendor URL:  portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0966 (Links to External Site)
Cause:   Authentication error

Message History:   None.


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