Check Point Advisories

Microsoft Internet Explorer Scripting Engine Memory Corruption (CVE-2017-0158)

Check Point Reference: CPAI-2017-0258
Date Published: 11 Apr 2017
Severity: Critical
Last Updated: Tuesday 11 April, 2017
Source: Microsoft CVE-2017-0158
Industry Reference:CVE-2017-0158
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable? Windows 7 for 32-bit Systems Service Pack 1
Windows 7 for x64-based Systems Service Pack 1
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1
Windows Server 2008 R2 for x64-based Systems Service Pack 1
Internet Explorer 9 on Windows Vista Service Pack 2
Internet Explorer 9 on Windows Server 2008 for 32-bit Systems Service Pack 2
Internet Explorer 9 on Windows Vista x64 Edition Service Pack 2
Internet Explorer 9 on Windows Server 2008 for x64-based Systems Service Pack 2
Windows 8.1 for 32-bit systems
Windows 8.1 for x64-based systems
Windows Server 2012 R2
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 10 Version 1511 for x64-based Systems
Internet Explorer 11 on Windows 10 Version 1511 for 32-bit 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
Windows Server 2012 R2 (Server Core installation)
Internet Explorer 10 on Windows Server 2012
Windows 10 Version 1703 for 32-bit Systems
Windows 10 Version 1703 for x64-based Systems
Vulnerability Description A Use-After-Free vulnerability exists in Microsoft Internet Explorer. The vulnerability is due to an error in the way VBScript engine manipulates the assignment of dynamic-array variables. A remote attacker can exploit this issue by enticing a target victim 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 Internet Explorer Scripting Engine Memory Corruption (CVE-2017-0158) 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 Internet Explorer Scripting Engine Memory Corruption (CVE-2017-0158)

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