Update Protection against Microsoft Silverlight Pointer Handling Memory Corruption Vulnerability (MS10-060)

Vulnerability
Protection

Check Point Reference:	CPAI-2010-228
Date Published:
Severity:
Last Updated:
Source:	Microsoft Security Bulletin MS10-060
Industry Reference(s):	CVE-2010-0019
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 Silverlight 3 when installed on all supported releases of Microsoft Windows clients Microsoft Silverlight 3 when installed on all supported releases of Microsoft Windows servers Microsoft Silverlight 3 when installed on Mac OS (Intel-based)
Vulnerability Description A memory corruption vulnerability has been reported in the way that Microsoft Silverlight handles pointers. Microsoft Silverlight is a cross-browser, cross-platform implementation of the Microsoft .NET Framework for building media experiences and rich interactive applications for the Web. A remote attacker could exploit this issue by convincing a user to open a maliciously crafted Web page, which will allow execution of arbitrary code on the vulnerable system.

Update/Patch Available Apply patches: Microsoft Security Bulletin MS10-061
Vulnerability Details The vulnerability is due to the way that Microsoft Silverlight handles pointers. To trigger this issue, an attacker may create a malicious Web page which contains Silverlight content. Successful exploitation of this vulnerability will cause Microsoft Silverlight to crash, or allow execution of arbitrary code on the vulnerable system.

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/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 > Web Intelligence > HTTP Client Protections > Microsoft Internet Explorer Vulnerabilities.
2. In the right pane, double-click the Microsoft Silverlight Pointer Handling Memory Corruption (MS10-061) 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: Web Client Enforcement Violation
Attack Information: Microsoft Silverlight pointer handling memory corruption (MS10-061)

VPN-1 NGX R65 & VSX NGX R65

How Can I Protect My Network?
1. In the SmartDefense tab, click Web Intelligence > HTTP Client Protections > Microsoft Internet Explorer Vulnerabilities > Microsoft Silverlight Pointer Handling Memory Corruption (MS10-061).
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: Web Client Enforcement Violation
Attack Information: Microsoft Silverlight pointer handling memory corruption (MS10-061)

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 Web Intelligence > HTML, and select the Microsoft Silverlight protection group.
3. Click Miscrosoft Silverlight Pointer Handling Memory Corruption (MS10-061) (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: Microsoft Silverlight Vulnerabilities
Description: Miscrosoft Silverlight Pointer Handling Memory Corruption (MS10-061)

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