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Update Protection against Microsoft OpenType Font Format Driver Index Code Execution Vulnerability (MS10-091)

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Check Point Reference: CPAI-2010-321
Date Published:
Severity:
Source: Microsoft Security Bulletin MS10-091
Industry Reference(s): CVE-2010-3956
Protection Provided by: Security Gateway
  • R71
  • R70
VPN-1
  • NGX R65
VSX
  • NGX R65
Who is Vulnerable?
Windows XP SP3
Windows XP Professional x64 Edition SP2
Windows Server 2003 SP2
Windows Server 2003 x64 Edition SP2
Windows Server 2003 with SP2 (Itanium)
Windows Vista SP1
Windows Vista SP2
Windows Vista x64 Edition SP1
Windows Vista x64 Edition SP2
Windows Server 2008 for 32-bit Systems
Windows Server 2008 for 32-bit Systems SP2
Windows Server 2008 for x64-based Systems
Windows Server 2008 for x64-based Systems SP2
Windows Server 2008 (Itanium)
Windows Server 2008 (Itanium) SP2
Windows 7 for 32-bit Systems
Windows 7 for x64-based Systems
Windows Server 2008 R2 for x64-based Systems
Windows Server 2008 R2 (Itanium)
Vulnerability Description
A remote code execution vulnerability has been reported in the way Microsoft Windows OpenType Font (OTF) format driver improperly parses specially crafted OpenType fonts. OpenType is a font format developed jointly by Microsoft and Adobe as an extension of Apple's TrueType font format. A remote attacker can exploit this vulnerability via a specially crafted OTF file. Successful exploitation may allow execution of arbitrary code on a vulnerable system.
Update/Patch Available
Apply patches:
Microsoft Security Bulletin MS10-091 
Vulnerability Details
The vulnerability is due to an error in the OpenType Font (OTF) format driver that fails to properly index an array when parsing OpenType fonts. A remote attacker may exploit this issue via a specially crafted OTF file. Successful exploitation of this issue may allow the attacker to take complete control of an affected system.

Protection Overview
This protection will detect and block the transferring of malformed OTF 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 OpenType Font Format Driver Index Code Execution (MS10-091) 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 OpenType font format driver index code execution (MS10-091)

VPN-1 NGX R65 & VSX NGX R65

How Can I Protect My Network?
1. In the SmartDefense tab, click Application Intelligence > Content Protection.
2. Select the following protection:

Microsoft OpenType Font Format Driver Index Code Execution (MS10-091)

3. In the configuration pane, under Settings > Mode, check Active.
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 OpenType font format driver index code execution (MS10-091)