Check Point Advisories

Microsoft Windows SChannel Denial Of Service (MS14-066; CVE-2014-6321)

Vulnerability
Protection

Check Point Reference:	CPAI-2014-2220
Date Published:	25 Nov 2014
Severity:	Critical
Last Updated:	Sunday 03 December, 2017
Source:	Microsoft MS14-066
Industry Reference:	CVE-2014-6321
Protection Provided by:	Security Gateway R81, R80, R77, R75, R71, R70
Who is Vulnerable?	Microsoft Windows 7 Microsoft Windows 8 Microsoft Windows 8.1 Microsoft Windows RT Microsoft Windows RT 8.1 Microsoft Windows Vista Microsoft Windows Server 2003 Microsoft Windows Server 2008 Microsoft Windows Server 2008 R2 Microsoft Windows Server 2012 Microsoft Windows Server 2012 R2
Vulnerability Description	A denial of service vulnerability exists in Microsoft SChannel. The vulnerability is due to improper processing of specially crafted packets that leads to a denial of service. A remote, unauthenticated attacker can exploit this vulnerability by sending specially crafted packets to the target machine.
Update/Patch Avaliable	Apply patches from: MS14-066

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, click on Protection tab and select the version of your choice.

Security Gateway R80 / R77 / R75 / R71 / R70

In the IPS tab, click Protections and find the Microsoft Windows SChannel Denial Of Service (MS14-066) protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: SSL Enforcement Violation.
Attack Information: Microsoft Windows SChannel Denial Of Service (MS14-066)