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Vulnerability Score 7.1 7.1
CVE Id CVE-2009-0085
Last Modified 21 Aug 2010 01:29:42
Published 10 Mar 2009 04:30:06
Confidentiality Impact NONE NONE
Availability Impact NONE NONE
Access Vector NETWORK
Access Complexity MEDIUM
Authentication NONE



The Secure Channel (aka SChannel) authentication component in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP1 and SP2, Vista Gold and SP1, and Server 2008, when certificate authentication is used, does not properly validate the client's key exchange data in Transport Layer Security (TLS) handshake messages, which allows remote attackers to spoof authentication by crafting a TLS packet based on knowledge of the certificate but not the private key, aka "SChannel Spoofing Vulnerability."

Vulnerable Systems

Operating System

  • Microsoft Windows 2000

  • Microsoft Windows Server 2003

  • Microsoft Windows Server 2008

  • Microsoft Windows Vista

  • Microsoft Windows Vista Gold

  • Microsoft Windows Xp


CERT - TA09-069A

MS - MS09-007

VUPEN - ADV-2009-0660

SECTRACK - 1021828

SECUNIA - 34215

OSVDB - 52521

Last Updated: 27 May 2016 10:50:06