Check Point Advisories

Microsoft Excel Remote Code Execution (CVE-2017-11935)

Vulnerability
Protection

Check Point Reference:	CPAI-2017-1044
Date Published:	12 Dec 2017
Severity:	High
Last Updated:	Tuesday 12 December, 2017
Source:	Microsoft CVE-2017-11935
Industry Reference:	CVE-2017-11935
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Microsoft Office 2016 Click-to-Run (C2R) for 32-bit editions Microsoft Office 2016 Click-to-Run (C2R) for 64-bit editions
Vulnerability Description	A remote code execution vulnerability exists in Microsoft Office. The vulnerability is due to an error in the way Microsoft Office improperly handles objects in memory while parsing specially crafted files. A remote attacker can exploit this issue by enticing a victim 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 Excel Remote Code Execution (CVE-2017-11935) 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 Excel Remote Code Execution (CVE-2017-11935)