Check Point Advisories

Microsoft Office Excel Note Record Information Disclosure (CVE-2018-8382)

Vulnerability
Protection

Check Point Reference:	CPAI-2019-0285
Date Published:	24 Feb 2019
Severity:	Medium
Last Updated:	Monday 18 March, 2019
Source:
Industry Reference:	CVE-2018-8382
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Microsoft Excel 2010 Service Pack 2 (32-bit editions) Microsoft Excel 2010 Service Pack 2 (64-bit editions) Microsoft Excel 2013 RT Service Pack 1 Microsoft Excel 2013 Service Pack 1 (32-bit editions) Microsoft Excel 2013 Service Pack 1 (64-bit editions) Microsoft Excel 2016 (32-bit edition) Microsoft Excel 2016 (64-bit edition) Microsoft Excel 2016 Click-to-Run (C2R) Microsoft Excel Viewer 2007 Service Pack 3 Microsoft Office 2016 for Mac Microsoft Office Compatibility Pack Service Pack 3
Vulnerability Description	An information disclosure vulnerability exists in Microsoft Excel. The vulnerability is due to a missing length verification in the parsing of workbook streams. Successful exploitation of this vulnerability would allow a remote attacker to obtain sensitive information.

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 Excel Note Record Information Disclosure 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 Excel Note Record Information Disclosure