Check Point Advisories

GnuTLS X.509 Version 1 Intermediate Certificate Policy Bypass (CVE-2014-1959)

Check Point Reference: CPAI-2014-1520
Date Published: 8 Jun 2014
Severity: High
Last Updated: Sunday 08 June, 2014
Source: CVE-2014-1959
Protection Provided by:

Security Gateway
R77

  • R76
  • R75

    		•
    Who is Vulnerable? GnuTLS 3.1.x prior to 3.1.21
    GnuTLS 3.2.x prior to 3.2.11
    Vulnerability Description A policy-bypass vulnerability has been found in GnuTLS. The vulnerability is due to an error in lib/x509/verify.c where an X.509 version 1 certificate is incorrectly treated as an intermediate CA certificate. A remote attacker could exploit this vulnerability to bypass certificate validation.

    Protection Overview

    This protection will detect and block attempts to exploit this vulnerability.

    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, Protection tab and select the version of your choice.

    Security Gateway R77 / R76 / R75 / R71 / R70

    1. In the IPS tab, click Protections and find the GnuTLS X.509 Version 1 Intermediate Certificate Policy Bypass protection using the Search tool and Edit the protection's settings.
    2. Install policy on all modules.

    SmartView Tracker will log the following entries:

    Attack Name:  OpenSSL Enforcement Violation.
    Attack Information:  GnuTLS X.509 Version 1 Intermediate Certificate Policy Bypass

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