Check Point Advisories

Microsoft Win32k Information Disclosure (CVE-2017-0188)

Vulnerability
Protection

Check Point Reference:	CPAI-2017-0255
Date Published:	11 Apr 2017
Severity:	High
Last Updated:	Tuesday 11 April, 2017
Source:	Microsoft CVE-2017-0188
Industry Reference:	CVE-2017-0188
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Windows Server 2012 Windows Server 2012 (Server Core installation) Windows 8.1 for 32-bit systems Windows 8.1 for x64-based systems Windows Server 2012 R2 Windows RT 8.1 Windows Server 2012 R2 (Server Core installation) Windows 10 for 32-bit Systems Windows 10 for x64-based Systems Windows 10 Version 1511 for x64-based Systems Windows 10 Version 1511 for 32-bit Systems Windows Server 2016 Windows 10 Version 1607 for 32-bit Systems Windows 10 Version 1607 for x64-based Systems Windows 10 Version 1703 for 32-bit Systems Windows 10 Version 1703 for x64-based Systems
Vulnerability Description	An Information Disclosure vulnerability exists in the Windows Common Log File System (CLFS) driver of Microsoft Windows. The vulnerability is due to the way Windows improperly handles objects in memory. An attacker could exploit this vulnerability to bypass security measures on the affected system allowing further exploitation.

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 Win32k Information Disclosure (CVE-2017-0188) 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 Win32k Information Disclosure (CVE-2017-0188)