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Fraudulent DigiNotar Certificates HTTPS Spoofing Vulnerability

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Check Point Reference: CPAI-2011-414
Date Published:
Severity:
Source: Microsoft Threat Research
Protection Provided by: Security Gateway
  • R75
  • R71
  • R70
VPN-1
  • NGX R65
Who is Vulnerable?
Web browsers
Vulnerability Description

A security breach had been reported at DigiNotar, a certification authority present in the Trusted Root Certification Authorities Store on all supported versions of Microsoft Windows. Several of DigiNotar's digital certificates had been signed on behalf of a third party, without sufficiently validating its identity. These certificates may be used to spoof content, perform phishing attacks or perform man-in-the-middle attacks against all Web browser users including users of Internet Explorer.

  • See the Details section for a list of the compromised certificates as revoked by DigiNotar.
  • For more details and mitigations for this vulnerability by other Check Point products, see sk65277
Vulnerability Details
The following certificates have been compromised:
DigiNotar Root CA
DigiNotar Root CA G2
DigiNotar PKIoverheid CA Overheid
DigiNotar PKIoverheid CA Organisatie - G2
DigiNotar PKIoverheid CA Overheid en Bedrijven

Protection Overview
This protection will detect and block the fraudulent DigiNotar Root certificates.

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 R75 / R71 / R70

How Can I Protect My Network?

  1. In the IPS tab, click Protections and find the Fraudulent DigiNotar Certificates HTTPS Spoofing Vulnerability protection using the Search tool and Edit the protection's settings.
  2. Install policy on all modules.

How Do I Know if My Network is Under Attack?
SmartView Tracker will log the following entries:
Attack Name: SSL Enforcement Violation
Attack Information: Fraudulent DigiNotar certificates HTTPS spoofing vulnerability