Check Point Advisories

Fraudulent DigiNotar Certificates HTTPS Spoofing

Check Point Reference: CPAI-2011-414
Date Published: 8 Sep 2011
Severity: Critical
Last Updated: Thursday 08 September, 2011
Source:
Protection Provided by:

Security Gateway
R81, R80, R77, R75, R71, R70, R65
Who is Vulnerable?
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.

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 product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R80 / R77 / R75 / R71 / R70 / R65

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

This protection's log will contain the following information:

Attack Name:  SSL Enforcement Violation.
Attack Information:  Fraudulent DigiNotar certificates HTTPS spoofing

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