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Update Protection against Microsoft Office BMP Header biClrUsed Integer Overflow (MS09-062)

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Check Point Reference: CPAI-2009-435
Date Published:
Severity:
Last Updated:
Source: Microsoft Scurity Bulletin MS09-062
Industry Reference(s): CVE-2009-2518
Protection Provided by: Security Gateway
  • R75
Who is Vulnerable?
Microsoft Office XP
Vulnerability Description
Microsoft Office is a popular productivity application suite released by Microsoft Corporation. It includes a word processor, a spreadsheet application, a presentation editor, and a number of other applications and components. The Office Document files used by these applications contain a common section that stores metadata, which includes the author name, application name, date of creation and other optional information. Among other features, Microsoft Office applications allow embedding of bitmap images in the documents.
Vulnerability Details
An integer overflow vulnerability has been reported in Microsoft Office. The vulnerability is due to lack of validation on the "biClrUsed" field when processing BMP header. Remote attackers can exploit this vulnerability by enticing the target user to open a malicious document.
Successful exploitation could result in injection and execution of arbitrary code, within the security context of the currently logged in user. The behaviour of the target would depend on the intention of the malicious code. In case if code injection is not successful, the affected application will terminate abnormally causing a denial of service condition.

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, Protection tab and select the version of your choice.

To configure the defense, select your product from the list below and follow the related protection steps.

Security Gateway R75

How Can I Protect My Network?
1. In the IPS tab, click Protections > By Protocol > IPS Software Blade > Application Intelligence > Content Protection.
2. In the right pane, double-click the Microsoft Office BMP Header biClrUsed Integer Overflow (MS09-062) protection.
3. In the Protection Details window, click on Edit. Choose the protection's Action (Override IPS Policy with: Prevent/Detect), and apply Additional Settings.
4. Install policy on all modules.

How Do I Know if My Network is Under Attack?
SmartView Tracker will log the following entries:

Attack Name: Content Protection Violation
Attack Information: Microsoft Office BMP header biClrUsed integer overflow (MS09-062)