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Update Protection against Microsoft Office Content-Disposition Header Vulnerability (MS08-056)

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Check Point Reference: CPAI-2008-151
Date Published:
Severity:
Last Updated:
Source: Microsoft Security Bulletin MS08-056
Industry Reference(s): CVE-2008-4020
Protection Provided by: VPN-1
  • NGX R65
  • NGX R62
  • NGX R61
  • NGX R60
VSX
  • NGX R65
InterSpect
  • NGX
Who is Vulnerable?
Microsoft Office XP SP3
Vulnerability Description
A cross-site scripting vulnerability has been reported in Microsoft Office. Cross-site scripting (XSS) could enable an attacker to inject code into a user's session with a Web site. A remote attacker may exploit this vulnerability to gain access to a user’s session data, allowing information disclosure.
Update/Patch Available
Apply patches:
Microsoft Security Bulletin MS08-056
Vulnerability Details
The vulnerability is due to a flaw in the cdo:// protocol that does not respect the "content-disposition: attachment" header and always renders the content. A remote attacker may exploit this issue by convincing a user to enter a site that utilizes the problematic header. Successfully exploitation of this vulnerability could allow the attacker to inject a client side script in the user's browser.

Protection Overview
By enabling this protection, SmartDefense will detect and block the vulnerable CDO URLs.

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 > Block Microsoft Office CDO URL Information Disclosure (MS08-056).
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 Office CDO URL information disclosure (MS08-056)

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 Microsoft Office CDO URL Information Disclosure (MS08-056)

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 Office CDO URL information disclosure (MS08-056)

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 > Block Microsoft Office CDO URL Information Disclosure (MS08-056).
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 Office CDO URL information disclosure (MS08-056)

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 Microsoft Office CDO URL Information Disclosure (MS08-056)

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 Office CDO URL information disclosure (MS08-056)