Check Point Advisories

Microsoft SSL and TLS Protocol Security Feature Bypass (MS13-006; CVE-2013-0013)

Check Point Reference: CPAI-2013-004
Date Published: 8 Jan 2013
Severity: Critical
Last Updated: Monday 17 February, 2014
Source:
Industry Reference:CVE-2013-0013
Protection Provided by:

Security Gateway
R81, R80, R77, R75, R71, R70
Who is Vulnerable?
Vulnerability Description A security feature bypass vulnerability has been reported in the Microsoft Windows SSL/TLS. The vulnerability is due to an error in the way Windows handle SSL/TLS session version negotiation. A remote attacker can exploit this issue by injecting specially crafted traffic into an SSL version 3 or TLS browsing session between Internet Explorer and a third-party server or a third-party client. Successful exploitation would allow the attacker to downgrade an SSL version 3 or TLS connection to SSL version 2, which supports weak encryption cyphers.

Protection Overview

IPS will detect and block attempts to inject malformed traffic into an SSL version 3 or TLS browsing session.

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

  1. In the IPS tab, click Protections and find the Microsoft SSL and TLS Protocol Security Feature Bypass (MS13-006) 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 Protection Violation.
Attack Information:  Microsoft SSL and TLS protocol security feature bypass (MS13-006)

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