Check Point Advisories

Microsoft Visual Basic Document Properties Buffer Overrun (MS06-047; CVE-2006-3649)

Check Point Reference: CPAI-2006-234
Date Published: 4 Jul 2010
Severity: High
Last Updated: Sunday 04 July, 2010
Source:
Industry Reference:CVE-2006-3649
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description Microsoft Visual Basic for Applications (VBA) is an implementation of Microsoft's Visual Basic which is built into all Microsoft Office applications, as well as some other Microsoft applications, such as Microsoft Visio and Microsoft Works Suite. Visual Basic (VB) is an event driven programming and scripting language. VBA technology allows programmable macros to be defined inside Microsoft Office documents. There exists a buffer overflow vulnerability in Microsoft Visual Basic for Applications (VBA). The flaw is caused by an improper boundary check in the processing of VBA data. By enticing a target user to open documents containing crafted VBA data, a remote attacker may execute arbitrary code on the target host with the privileges of the currently logged on user. In case of an attack where code injection is not successful, the Microsoft Office application will terminate. This can potentially lead to a loss of data. In case of an attack where code injection and execution is successful, the behavior of the target is entirely dependent on the intended function of the injected code. The code in such a case would execute within the security context of the current user.

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 Visual Basic Document Properties Buffer Overrun (MS06-047) 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 Visual Basic document properties buffer overrun (MS06-047)

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