National Cyber Awareness System
Vulnerability Summary for CVE-2009-0085
Original release date:03/10/2009
Last revised:08/21/2010
Source:
US-CERT/NIST
Overview
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."
Impact
CVSS Severity (version 2.0):
Impact Subscore:
6.9
Exploitability Subscore:
8.6
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type:Allows unauthorized modification
References to Advisories, Solutions, and Tools
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US-CERT Technical Alert: TA09-069A
Name: TA09-069A
External Source: MS
Name: MS09-007
Type: Advisory; Patch Information
External Source: VUPEN
Name: ADV-2009-0660
External Source: SECTRACK
Name: 1021828
External Source: SECUNIA
Name: 34215
External Source: OVAL
Name: oval:org.mitre.oval:def:6011
External Source: OSVDB
Name: 52521
References to Check Content
Identifier:oval:org.mitre.oval:def:6011
Check System:http://oval.mitre.org/XMLSchema/oval-definitions-5
