Check Point Advisories

Microsoft Browser Scripting Engine Memory Corruption (CVE-2018-8372)

Vulnerability
Protection

Check Point Reference:	CPAI-2018-0821
Date Published:	14 Aug 2018
Severity:	Critical
Last Updated:	Tuesday 14 August, 2018
Source:	Microsoft CVE-2018-8372
Industry Reference:	CVE-2018-8372
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Internet Explorer 11 on Windows 7 for 32-bit Systems Service Pack 1 Internet Explorer 11 on Windows 7 for x64-based Systems Service Pack 1 Internet Explorer 11 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 Internet Explorer 11 on Windows 8.1 for 32-bit systems Internet Explorer 11 on Windows 8.1 for x64-based systems Internet Explorer 11 on Windows Server 2012 R2 Internet Explorer 11 on Windows RT 8.1 Internet Explorer 11 on Windows 10 for 32-bit Systems Internet Explorer 11 on Windows 10 for x64-based Systems Internet Explorer 11 on Windows Server 2016 Internet Explorer 11 on Windows 10 Version 1607 for 32-bit Systems Internet Explorer 11 on Windows 10 Version 1607 for x64-based Systems Internet Explorer 11 on Windows 10 Version 1703 for 32-bit Systems Internet Explorer 11 on Windows 10 Version 1703 for x64-based Systems Internet Explorer 11 on Windows 10 Version 1709 for 32-bit Systems Internet Explorer 11 on Windows 10 Version 1709 for x64-based Systems Internet Explorer 11 on Windows 10 Version 1803 for 32-bit Systems Internet Explorer 11 on Windows 10 Version 1803 for x64-based Systems Microsoft Edge on Windows 10 for 32-bit Systems Microsoft Edge on Windows 10 for x64-based Systems Microsoft Edge on Windows Server 2016 Microsoft Edge on Windows 10 Version 1607 for 32-bit Systems Microsoft Edge on Windows 10 Version 1607 for x64-based Systems Microsoft Edge on Windows 10 Version 1703 for 32-bit Systems Microsoft Edge on Windows 10 Version 1703 for x64-based Systems Microsoft Edge on Windows 10 Version 1709 for 32-bit Systems Microsoft Edge on Windows 10 Version 1709 for x64-based Systems Microsoft Edge on Windows 10 Version 1803 for 32-bit Systems Microsoft Edge on Windows 10 Version 1803 for x64-based Systems ChakraCore
Vulnerability Description	A memory corruption vulnerability exists in Microsoft Browser. Successful exploitation of this vulnerability could allow a remote attacker to execute arbitrary code 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 Browser Scripting Engine Memory Corruption (CVE-2018-8372) 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: Web Client Enforcement Violation.
Attack Information: Microsoft Browser Scripting Engine Memory Corruption (CVE-2018-8372)