Check Point Advisories

Microsoft Edge Chakra Eval Integer Overflow (CVE-2017-8641)

Vulnerability
Protection

Check Point Reference:	CPAI-2017-0708
Date Published:	23 Aug 2017
Severity:	High
Last Updated:	Tuesday 06 December, 2022
Source:	Microsoft
Industry Reference:	CVE-2017-8641
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Microsoft Edge . Microsoft Internet Explorer 9 Microsoft Internet Explorer 10 Microsoft Internet Explorer 11
Vulnerability Description	An integer overflow vulnerability exists in Microsoft Edge Chakra JavaScript Engine. The vulnerability is due to an overly large size of the eval() function argument. 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 R81 / R80 / R77 / R75

In the IPS tab, click Protections and find the Microsoft Edge Chakra Eval Integer Overflow (CVE-2017-8641) 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 Chakra Eval Integer Overflow (CVE-2017-8641)