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Update Protection against Microsoft Word HTML Linked Objects Memory Corruption Vulnerability (MS10-056)

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Check Point Reference: CPAI-2010-226
Date Published:
Severity:
Last Updated:
Source: Check Point Vulnerability Discovery Team
Industry Reference(s): CVE-2010-1903
Protection Provided by: Security Gateway
  • R71
  • R70
VPN-1
  • NGX R65
VSX
  • NGX R65
IPS-1
  • IPS-1
  • IPS-1 NGX R65
Who is Vulnerable?
Microsoft Office Word 2002 SP3
Microsoft Office Word 2003 SP3
Microsoft Office Word 2007 SP2
Microsoft Office Word Viewer
Vulnerability Description
A remote code execution vulnerability has been identified in Microsoft Word. Microsoft Word is a popular word processing software. A remote attacker could exploit this issue via a malformed Word file. Successful exploitation of this vulnerability may allow execution of arbitrary code on a target system.
Update/Patch Available
Apply patches:
Microsoft Security Bulletin MS10-056
Vulnerability Details
The vulnerability is due to an error in Microsoft Word that fails to properly parse specially crafted Word files. A remote attacker could trigger this flaw by convincing a victim to open a specially crafted Word file. 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 Word files over HTTP.

In order for the protection to be activated, update your Security Gateway/VPN-1 product to the latest IPS/SmartDefense update. For information on how to update IPS/SmartDefense, 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: R70/R71

How Can I Protect My Network?
1. In the IPS tab, click Protections > By Protocol > Application Intelligence > Content Protection.
2. In the right pane, double-click the Microsoft Word HTML Linked Objects Memory Corruption (MS10-056) 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 Word HTML linked objects memory corruption (MS10-056)

VPN-1 NGX R65 & VSX NGX R65

How Can I Protect My Network?
1. In the SmartDefense tab, click Application Intelligence > Content Protection > Microsoft Word HTML Linked Objects Memory Corruption (MS10-056).
2. In the configuration pane, under Settings > Mode, check Active.
3. 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 Word HTML linked objects memory corruption (MS10-056)

IPS-1 & IPS-1 NGX R65

How Can I Protect My Network?
1. In the IPS-1 Policy Manager, click on the Protection tab.
2. In the Protection tree, click Application Intelligence > Badfiles, and select the Microsoft Office Parser protection group.
3. Click Microsoft Word HTML Linked Objects Memory Corruption (MS10-056) (IPS-1 NGX R65 only).
4. In the configuration pane, under Settings, check Active.
5. Click on Install Policy.

How Do I Know if My Network is Under Attack?
Upon attack, the following entry will be logged:

Alert Name: Vulnerability in MS-Office file
Description: Microsoft Word HTML Linked Objects Memory Corruption (MS10-056)