Update Protection against Microsoft Word RTF Data Parsing Buffer Overflow Vulnerability (MS10-056)

Vulnerability
Protection

Check Point Reference:	CPAI-2010-237
Date Published:
Severity:
Last Updated:
Source:	Microsoft Security Bulletin MS10-056
Industry Reference(s):	CVE-2010-1902
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 2004 for Mac Microsoft Office 2008 for Mac Open XML File Format Converter for Mac Microsoft Office Word Viewer Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats SP2
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 RTF 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 insufficient data validation by Microsoft Office Word when handling rich text data. A remote attacker could trigger this flaw by convincing a victim to open a specially crafted Rich Text Format (.rtf) file in Word. 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 RTF 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 RTF Data Parsing Buffer Overflow (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 RTF data parsing buffer overflow (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 RTF Data Parsing Buffer Overflow (MS10-056).
2. In the configuration pane, under Settings > Mode, check Active.
3. Install policy on all modules.

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 RTF File Parser protection group.
3. Click Microsoft Word RTF Data Parsing Buffer Overflow (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: RTF Alert Source
Description: Microsoft Word RTF Data Parsing Buffer Overflow (MS10-056)

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