Check Point Advisories

Microsoft Excel Incorrect BIFF2 Record Parsing Code Execution (MS11-072; CVE-2011-1988)

Vulnerability
Protection

Check Point Reference:	CPAI-2012-163
Date Published:	30 Apr 2012
Severity:	High
Last Updated:	Saturday 20 April, 2024
Source:	CVE-2011-1988
Protection Provided by:	Security Gateway R75
Who is Vulnerable?	Microsoft Excel 2003 Microsoft Excel 2007 Microsoft Office 2004 for Mac Microsoft Office 2008 for Mac Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats Microsoft Office Excel Viewer Microsoft Open XML File Format Converter for Mac
Vulnerability Description	A remote code execution vulnerability has been reported in Microsoft Excel.
Vulnerability Details	The vulnerability is due to a heap memory corruption while parsing certain BIFF2 records in Excel files. A remote attacker could exploit this vulnerability by enticing a target user to open a malicious BIFF2 file using a vulnerable version of Excel. Successful exploitation could allow an attacker to execute arbitrary code, in the security context of the target user.

Protection Overview

This protection will detect and block attempts to transfer malicious BIFF2 files over HTTP.

In order for the protection to be activated, update your product to the latest update. For information on how to update , go to SBP-2006-05, Protection tab and select the version of your choice.

Security Gateway R75 / R71 / R70

In the IPS tab, click Protections and find the Microsoft Excel Incorrect BIFF2 Record Parsing Code Execution (MS11-072) protection using the Search tool and Edit the protection's settings.
Install policy on all modules.

SmartView Tracker will log the following entries:
Attack Name: Content Protection Violation
Attack Information: Microsoft Excel Incorrect BIFF2 Record Parsing Code Execution (MS11-072)