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Update Protection against Microsoft Internet Explorer Parameter Validation Memory Corruption Vulnerability (MS08-073)

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Check Point Reference: CPAI-2008-169
Date Published:
Severity:
Last Updated:
Source: Microsoft Security Bulletin MS08-073
Industry Reference(s): CVE-2008-4258
Protection Provided by: VPN-1
  • NGX R65
  • NGX R62
  • NGX R61
  • NGX R60
VSX
  • NGX R65
InterSpect
  • NGX
IPS-1
  • IPS-1
  • IPS-1 NGX R65
Who is Vulnerable?
Internet Explorer 5.01 SP4 when installed on Microsoft Windows 2000 SP4
Internet Explorer 6 SP1 when installed on Microsoft Windows 2000 SP4
Vulnerability Description
A remote code execution vulnerability has been reported in Microsoft Internet Explorer. A remote attacker could exploit this issue by convincing a user to open a maliciously crafted HTML file with Internet Explorer.
Update/Patch Available
Apply patches:
Microsoft Security Bulletin MS08-073
Vulnerability Details
The vulnerability is due to an error in Internet Explorer that fails to properly validate parameters made during a method call in the browser. An attacker can trigger this flaw by convincing a user to view a specially crafted HTML document. Successful exploitation of this vulnerability allows execution of arbitrary code on a vulnerable system.

Protection Overview
By enabling this protection, SmartDefense will detect and block attempts to exploit this vulnerability. IPS-1 will detect and block the 'Navigate' ActiveX methods that may cause memory corruption in ActiveX. Depending on the traffic mix, activating this protection may result in performance degradation.

In order for the protection to be activated, update your VPN-1 product to the latest SmartDefense update. For information on how to update 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.

VPN-1 NGX R65 & R62

How Can I Protect My Network?
1. In the SmartDefense tab, click Web Intelligence > HTTP Client Protections > Microsoft Internet Explorer Vulnerabilities > Microsoft Internet Explorer Parameter Validation Memory Corruption (MS08-073).
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 Internet Explorer parameter validation memory corruption (MS08-073)

VPN-1 NGX R61 & R60

How Can I Protect My Network?
1. In the Web Intelligence tree, click HTTP Client Protections > Microsoft Internet Explorer Vulnerabilities.
2. Select the following:

Microsoft Internet Explorer Parameter Validation Memory Corruption (MS08-073)

3. Install security 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 Internet Explorer parameter validation memory corruption (MS08-073)

VPN-1 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 Internet Explorer Parameter Validation Memory Corruption (MS08-073).
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 Internet Explorer parameter validation memory corruption (MS08-073)

InterSpect NGX

How Can I Protect My Network?
1. In the left pane, select Profiles > Default Protection and select the Web Intelligence page of the profile.
2. In the Web Intelligence tree, click HTTP Client Protections > Microsoft Internet Explorer vulnerabilities.
3. Select the following:

Microsoft Internet Explorer Parameter Validation Memory Corruption (MS08-073)

4. Install security 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 Internet Explorer parameter validation memory corruption (MS08-073)

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 ActiveX Parser protection group.
3. Click CVE-2008-4258 Microsoft Internet Explorer Parameter Validation Memory Corruption (MS08-073) (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: Badfiles ActiveX class in HTML file Alert/Filter
Description: CVE-2008-4258 Microsoft Internet Explorer Parameter Validation Memory Corruption (MS08-073)