Check Point Advisories

Microsoft Excel rtWindow1 Record Handling Code Execution (CVE-2007-3029)

Check Point Reference: CPAI-2007-291
Date Published: 8 Feb 2010
Severity: High
Last Updated: Monday 08 February, 2010
Source:
Industry Reference:CVE-2007-3029
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description Microsoft Excel is a popular spreadsheet application that is usually released as part of the Microsoft Office suite. The application can create complex spreadsheets with multiple workbooks, formula, and various data sources. The common extension used for Microsoft Excel documents is .xls or .xlw. A memory corruption vulnerability exists in the way Microsoft Excel handles XLS files that contain invalid values within certain records. A remote attacker can exploit this vulnerability by persuading a target user to open a specially crafted XLS file, potentially causing arbitrary code to be injected and executed in the security context of the logged in user. In case of an attack where code injection and execution is successful, the behavior of the target will depend on the intention of the attacker. Any code injected will be executed within the security context of the currently logged in user. In the case of attack where code injection is unsuccessful, Microsoft Excel will terminate resulting in the loss of any unsaved data from the current session.

Protection Overview

This protection will detect and block 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 rtWindow1 Record Handling Code Execution 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 rtWindow1 record handling code execution (MS07-036)

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