Check Point Advisories

Microsoft Edge EmitAssignment Memory Corruption

Vulnerability
Protection

Check Point Reference:	CPAI-2017-0719
Date Published:	28 Aug 2017
Severity:	High
Last Updated:	Tuesday 29 August, 2017
Source:
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Microsoft Edge
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 R80 / R77 / R75

In the IPS tab, click Protections and find the Microsoft Edge EmitAssignment Memory Corruption 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 EmitAssignment Memory Corruption