Check Point Advisories

Microsoft Excel File Named Graph Record Parsing Stack Overflow (MS07-023; CVE-2007-0215)

Check Point Reference: CPAI-2007-267
Date Published: 17 Feb 2010
Severity: High
Last Updated: Monday 18 May, 2015
Source:
Industry Reference:CVE-2007-0215
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, formulae, and various data sources. The proprietary file format used for storing Microsoft Excel documents is known as the Binary Interchange File Format (BIFF), with different versions of the application supporting different versions of the format. The common extension used for Microsoft Excel documents is .xls. A buffer overflow vulnerability exists in the way Microsoft Excel processes files. The vulnerability is a result of an insufficient boundary checking while processing Named Graph Record. A remote attacker can exploit this vulnerability by enticing the target user to open a crafted Excel file, potentially causing arbitrary code to be injected and executed in the security context of the current user. In case of an attack where code injection and execution is successful, the behavior of the target will depend on the intended purpose of the injected code. Any code injected will be executed within the security context of the currently logged in user. In case of an attack where code injection is not successful, 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 File Named Graph Record Parsing Stack Overflow (MS07-023) 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 file Named Graph record parsing stack overflow (MS07-023)

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