Check Point Advisories

Microsoft Excel Memory Corruption (CVE-2017-11878)

Check Point Reference: CPAI-2017-0904
Date Published: 14 Nov 2017
Severity: High
Last Updated: Tuesday 14 November, 2017
Source: Microsoft CVE-2017-11878
Industry Reference:CVE-2017-11878
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable? Microsoft Excel 2013 Service Pack 1 (32-bit editions)
Microsoft Excel 2013 Service Pack 1 (64-bit editions)
Microsoft Excel 2013 RT Service Pack 1
Microsoft Excel 2016 (32-bit edition)
Microsoft Excel 2016 (64-bit edition)
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

  1. In the IPS tab, click Protections and find the Microsoft Excel Memory Corruption (CVE-2017-11878) 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:  Content Protection Violation.
Attack Information:  Microsoft Excel Memory Corruption (CVE-2017-11878)

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