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Update Protection against Microsoft Internet Explorer Event Handler Information Disclosure Vulnerability (MS10-053)

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Check Point Reference: CPAI-2010-224
Date Published:
Severity:
Last Updated:
Source: Microsoft Security Bulletin MS10-053
Industry Reference(s): CVE-2010-1258
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?
Internet Explorer 6 for:
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)
Internet Explorer 7 for:
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
Internet Explorer 8 for:
Windows XP SP3
Windows XP Professional x64 Edition SP2
Windows Server 2003 SP2
Windows Server 2003 x64 Edition SP2
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 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
An information disclosure vulnerability has been reported in Internet Explorer that could allow script to gain access to a browser window in another domain or Internet Explorer zone. A remote attacker could exploit this issue by convincing a user to open a maliciously crafted HTML file with Internet Explorer, which will cause the browser to crash and may allow execution of a script in the context of the user in another Internet Explorer domain.
Update/Patch Available
Apply patches:
Microsoft Security Bulletin MS10-053 
Vulnerability Details
The vulnerability is due to an error in Internet Explorer that incorrectly interprets the origin of a script, allowing the script to run in the context of a domain or Internet Explorer security zone other than where it originated. To trigger this issue, an attacker may create a malicious web page that will cause Internet Explorer to exit unexpectedly. Successful exploitation of this vulnerability will result in cross-domain scripting on the user, allowing the attacker to execute script in the context of the user in another Internet Explorer domain.

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 Internet Explorer Event Handler Information Disclosure (MS10-053) 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: Internet Explorer event handler information disclosure (MS10-053)

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 > Internet Explorer Event Handler Information Disclosure (MS10-053).
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: Internet Explorer event handler information disclosure (MS10-053)

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 Internet Explorer protection group.
3. Click Internet Explorer Event Handler Information Disclosure (MS10-053) (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: Internet Explorer Vulnerabilities
Description: Internet Explorer Event Handler Information Disclosure (MS10-053)