MS09-007: Vulnerability in SChannel Could Allow Spoofing (960225)

This script is Copyright (C) 2009-2013 Tenable Network Security, Inc.


Synopsis :

It may be possible to spoof user identities.

Description :

The Secure Channel (SChannel) authentication component included in the
remote version of Windows does not sufficiently validate certain
Transport Layer Security (TLS) handshake messages to ensure that a
client does in fact have access to the private key linked to a
certificate used for authentication. An attacker who has access to the
public key component of a user's certificate may be able to leverage
this issue to authenticate as that user against services such as web
servers that use certificate-based authentication or to impersonate that
user.

See also :

http://technet.microsoft.com/en-us/security/bulletin/MS09-007

Solution :

Microsoft has released a set of patches for Windows 2000, XP, 2003,
Vista and 2008.

Risk factor :

High / CVSS Base Score : 9.3
(CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 6.9
(CVSS2#E:U/RL:OF/RC:C)
Public Exploit Available : false

Family: Windows : Microsoft Bulletins

Nessus Plugin ID: 35823 ()

Bugtraq ID: 34015

CVE ID: CVE-2009-0085