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Update Protection against Yahoo! Toolbar URL Shortcut ActiveX Control Buffer Overflow Vulnerability

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Check Point Reference: CPAI-2008-008
Date Published:
Severity:
Source: ISS X-Force Databse: 39155
Industry Reference(s): CVE-2007-6535
Protection Provided by: VPN-1
  • NGX R65
  • NGX R62
  • NGX R61
  • NGX R60
  • NG with Application Intelligence R55
VSX
  • NGX
InterSpect
  • NGX
Who is Vulnerable?
Yahoo! Yahoo! Toolbar 1.4.1 and prior
Yahoo! Widgets 4.5.1 and prior
Yahoo! Messenger 8.1.0.421 and prior
Vulnerability Description
A buffer overflow vulnerability was reported in Yahoo! Toolbar. Yahoo! Toolbar is a pop-up blocker for Firefox and Internet Explorer that allows instant access to several Yahoo! features. By convincing a user to visit a specially crafted web page, a remote attacker may trigger this vulnerability to execute arbitrary code on an affected system.
Vulnerability Details
This vulnerability is due to boundary errors in the Yahoo! Toolbar YShortcut ActiveX Control. To trigger this issue, an attacker may create a malicious web page that will exploit the ActiveX Control flaws. Successful exploitation may allow execution of arbitrary code on the vulnerable system.

Protection Overview
By enabling this protection, SmartDefense will detect and block the vulnerability in the ActiveX Control. 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/InterSpect 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 > Block Yahoo Toolbar ActiveX Control Buffer Overflow.
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: Yahoo toolbar activeX buffer overflow detected

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:

Block Yahoo Toolbar ActiveX Control Buffer Overflow

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: Yahoo toolbar activeX buffer overflow detected

VPN-1 NG with Application Intelligence R55

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

Block Yahoo Toolbar ActiveX Control Buffer Overflow

3. Install security policy on all modules.

How Do I Know if My Network is Under Attack?
Rule #99965 will appear on the SmartView Tracker.

VPN-1 VSX NGX

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

Block Yahoo Toolbar ActiveX Control Buffer Overflow

3. Install security policy on all modules.

How Do I Know if My Network is Under Attack?
Rule #99965 will appear on the SmartView Tracker.

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:

Block Yahoo Toolbar ActiveX Control Buffer Overflow

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: Yahoo toolbar activeX buffer overflow detected