Check Point Advisories

Microsoft Device Guard Security Feature Bypass (CVE-2018-8449)

Vulnerability
Protection

Check Point Reference:	CPAI-2018-0875
Date Published:	11 Sep 2018
Severity:	High
Last Updated:	Tuesday 11 September, 2018
Source:	Microsoft CVE-2018-8449
Industry Reference:	CVE-2018-8449
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Windows 10 for 32-bit Systems Windows 10 for x64-based Systems Windows Server 2016 Windows 10 Version 1607 for 32-bit Systems Windows 10 Version 1607 for x64-based Systems Windows Server 2016 (Server Core installation) Windows 10 Version 1703 for 32-bit Systems Windows 10 Version 1703 for x64-based Systems Windows 10 Version 1709 for 32-bit Systems Windows 10 Version 1709 for x64-based Systems Windows Server, version 1709 (Server Core Installation) Windows 10 Version 1803 for 32-bit Systems Windows 10 Version 1803 for x64-based Systems Windows Server, version 1803 (Server Core Installation)
Vulnerability Description	A security bypass vulnerability exists in Microsoft Device Guard. Successful exploitation of this vulnerability would allow remote attackers to bypass security tests and protocols on the affected system.

Protection Overview

This protection detects attempts to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R80 / R77 / R75

In the IPS tab, click Protections and find the Microsoft Device Guard Security Feature Bypass (CVE-2018-8449) protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: Content Protection Violation.
Attack Information: Microsoft Device Guard Security Feature Bypass (CVE-2018-8449)