Check Point Advisories

Microsoft Office Memory Corruption (CVE-2017-11826)

Vulnerability
Protection

Check Point Reference:	CPAI-2017-0833
Date Published:	13 Oct 2017
Severity:	Critical
Last Updated:	Thursday 11 January, 2018
Source:	Microsoft CVE-2017-11826
Industry Reference:	CVE-2017-11826
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Microsoft Word 2007 Service Pack 3 Microsoft Word 2010 Service Pack 2 (32-bit editions) Microsoft Word 2010 Service Pack 2 (64-bit editions) Microsoft Word 2013 Service Pack 1 (32-bit editions) Microsoft Word 2013 Service Pack 1 (64-bit editions) Microsoft Word 2013 RT Service Pack 1 Microsoft Office Web Apps Server 2013 Service Pack 1 Microsoft Office Web Apps Server 2010 Service Pack 2 Microsoft Word 2016 (32-bit edition) Microsoft Word 2016 (64-bit edition) Microsoft Office Online Server 2016 Microsoft SharePoint Enterprise Server 2016 Microsoft Office Word Viewer Microsoft Office Compatibility Pack Service Pack 3 Word Automation Services on Microsoft SharePoint Server 2010 Service Pack 2 Word Automation Services on Microsoft SharePoint Server 2013 Service Pack 1
Vulnerability Description	A remote code execution vulnerability exists in Microsoft Word. The vulnerability is due to an error in Microsoft Word that fails to properly parse the file format. A remote attacker could exploit this vulnerability by enticing a target user to open a specially crafted file.

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 Office Memory Corruption (CVE-2017-11826) 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: Content Protection Violation.
Attack Information: Microsoft Office Memory Corruption (CVE-2017-11826)