Check Point Advisories

Microsoft Edge Scripting Engine Memory Corruption (CVE-2017-11809)

Vulnerability
Protection

Check Point Reference:	CPAI-2017-0840
Date Published:	16 Oct 2017
Severity:	High
Last Updated:	Tuesday 06 December, 2022
Source:	Microsoft CVE-2017-11809
Industry Reference:	CVE-2017-11809
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Microsoft Edge on Windows 10 for 32-bit Systems Microsoft Edge on Windows 10 for x64-based Systems Microsoft Edge on Windows 10 Version 1511 for x64-based Systems Microsoft Edge on Windows 10 Version 1511 for 32-bit 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 ChakraCore
Vulnerability Description	A Memory Corruption Vulnerability exists in Microsoft Edge. The vulnerability is due to the way JavaScript engine renders when handling objects in memory. A remote unauthenticated attacker could exploit this vulnerability by enticing the target user to open a specially crafted web page.

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 R81 / R80 / R77 / R75

In the IPS tab, click Protections and find the Microsoft Edge Scripting Engine Memory Corruption (CVE-2017-11809) 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 Edge Scripting Engine Memory Corruption (CVE-2017-11809)