Check Point Advisories

Microsoft Windows Security Support Provider SChannel Spoofing (MS09-007; CVE-2009-0085)

Vulnerability
Protection

Check Point Reference:	CPAI-2009-038
Date Published:	10 Mar 2009
Severity:	High
Last Updated:	Tuesday 10 November, 2015
Source:
Industry Reference:	CVE-2009-0085
Protection Provided by:	Security Gateway R81, R80, R77, R75, R71, R70, R65
Who is Vulnerable?
Vulnerability Description	SSP is a dynamic-link library (DLL) that implements a common interface between transport-level applications and security providers by making one or more security packages available to applications.Security packages support security protocols such as Kerberos authentication and Secure Channel (SChannel) authentication. A spoofing vulnerability has been reported in the Microsoft Windows Security Support Provider (SSP) SChannel authentication component when using certificate based authentication.The vulnerability is due to an error in the SChannel authentication component that fails to sufficiently validate certain Transport Layer Security (TLS) handshake messages to ensure that the client does in fact have access to the private key linked to the certificate used for authentication.

Protection Overview

This protection will detect and block attempts to exploit the spoofing 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 / R65

In the IPS tab, click Protections and find the Microsoft Windows Security Support Provider SChannel Spoofing (MS09-007) 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 Protection Violation.
Attack Information: Microsoft Windows security support provider SChannel spoofing (MS09-007)