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Check Point Advisories

Microsoft Edge Scripting Engine Memory Corruption (CVE-2017-8671)

Check Point Reference: CPAI-2017-0718
Date Published: 28 Aug 2017
Severity: High
Last Updated: 24 Oct 2017
Source: Microsoft CVE-2017-8671
Industry Reference:CVE-2017-8671
Protection Provided by:

Security Gateway
R80, R77, R75

Who is Vulnerable? 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
Vulnerability Description An off-by-one vulnerability exists in Microsoft Edge Chakra JavaScript Engine. The vulnerability is due to the way Microsoft Edge Chakra JavaScript engine renders when handling objects in memory. A remote 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

  1. In the IPS tab, click Protections and find the Microsoft Edge Scripting Engine Memory Corruption (CVE-2017-8671) protection using the Search tool and Edit the protection's settings.
  2. 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-2017-8671)

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