CVE-2009-0085

Description

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."

Category

7.1
CVSS
Severity: High
CVSS 2.0 •
EPSS 21.10% Top 5%
Vendor Advisory microsoft.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-007 vendor advisory
http://www.securitytracker.com/id?1021828 vdb entry
http://www.us-cert.gov/cas/techalerts/TA09-069A.html third party advisory us government resource
http://www.vupen.com/english/advisories/2009/0660 vdb entry
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6011 vdb entry signature
http://secunia.com/advisories/34215 third party advisory
http://osvdb.org/52521 vdb entry

Frequently Asked Questions

What is the severity of CVE-2009-0085?
CVE-2009-0085 has been scored as a high severity vulnerability.
How to fix CVE-2009-0085?
To fix CVE-2009-0085, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2009-0085 being actively exploited in the wild?
It is possible that CVE-2009-0085 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~21% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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