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Update Protection against Microsoft Word Malformed SPRM Record Buffer Overflow Vulnerability (MS09-027)

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Check Point Reference: CPAI-2009-164
Date Published:
Severity:
Last Updated:
Source: Microsoft Security Bulletin MS09-027
Industry Reference(s): CVE-2009-0565
Protection Provided by: Security Gateway
  • R70
IPS-1
  • IPS-1
  • IPS-1 NGX R65
Who is Vulnerable?
Microsoft Office Word 2000 SP3
Microsoft Office Word 2002 SP3
Microsoft Office Word 2007 SP1
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 MS09-027
Vulnerability Details
The vulnerability is due to an error in Microsoft Word that fails to properly handle Word files. A remote attacker could trigger this flaw by convincing a victim to open a specially crafted Word 6 file that includes a malformed SPRM record. 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 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 R70

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 Malformed SPRM Record Buffer Overflow (MS09-027) 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 malformed SPRM record buffer overflow (MS09-027)

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 CVE-2009-0565 Microsoft Word 6.0 Buffer Overflow (MS09-027) (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 entries will be logged:

Alert Name: Vulnerability in MS-Office file
Description: CVE-2009-0565 Microsoft Word 6.0 Buffer Overflow (MS09-027)