Check Point Advisories

Microsoft Excel Document Malformed BIFF Record Heap Overflow (MS09-067; CVE-2009-3130)

Check Point Reference: CPAI-2009-282
Date Published: 10 Nov 2009
Severity: High
Last Updated: Tuesday 10 November, 2009
Source:
Industry Reference:CVE-2009-3130
Protection Provided by:

Security Gateway
R81, R80, R77, R75, R71, R70, R65
Who is Vulnerable?
Vulnerability Description Microsoft Excel is a popular spreadsheet application. A remote code execution vulnerability has been identified in Microsoft Excel. The vulnerability is due to an error in Microsoft Office Excel that fails to properly parse the Excel spreadsheet file format. A remote attacker could trigger this flaw by convincing a victim to open a specially crafted Excel spreadsheet file that includes a malformed BIFF record. Successful exploitation of this issue may corrupt system memory, allowing execution of arbitrary code on a vulnerable system.

Protection Overview

This protection will detect and block the transferring of malformed Excel files over HTTP.

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 / R71 / R70 / R65

  1. In the IPS tab, click Protections and find the Microsoft Excel Document Malformed BIFF Record Heap Overflow (MS09-067) 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 document malformed BIFF record heap overflow (MS09-067)

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