From: Secunia Security Advisories (sec-advsecunia.com)
Date: Tue Oct 13 2009 - 17:10:11 CDT

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TITLE:
Microsoft Windows CryptoAPI Two Spoofing Vulnerabilities

SECUNIA ADVISORY ID:
SA36999

VERIFY ADVISORY:
http://secunia.com/advisories/36999/

DESCRIPTION:
Two vulnerabilities have been reported in Microsoft Windows, which
can be exploited by malicious people to conduct spoofing attacks.

1) An error exists in the processing of ASN.1 information from X.509
certificates. This can be exploited to spoof trust information
presented to the user with a certificate containing e.g. via a NULL
byte in the Common Name field.

2) An integer overflow error exists in the parsing of ASN.1 object
identifiers from X.509 certificates. This can be exploited to spoof
trust information presented to the user with a certificate containing
a specially crafted Object Identifiers (OID).

SOLUTION:
Apply patches.

Microsoft Windows 2000 SP4:
http://www.microsoft.com/downloads/details.aspx?familyid=52b9198d-b65f-467a-a5ab-141e23d64a86

Windows XP SP2 / SP3:
http://www.microsoft.com/downloads/details.aspx?familyid=9c5ab624-e37b-418a-a919-d8f652b15679

Windows XP Professional x64 Edition SP2:
http://www.microsoft.com/downloads/details.aspx?familyid=ad29696d-4611-4a12-9dfa-74fa6866b759

Windows Server 2003 SP2:
http://www.microsoft.com/downloads/details.aspx?familyid=49e9cc53-cf17-4bc7-aaaa-92213167e1a9

Windows Server 2003 x64 Edition SP2:
http://www.microsoft.com/downloads/details.aspx?familyid=d170cef9-f5d2-4fcd-997b-e778ad5a6797

Windows Server 2003 with SP2 for Itanium-based Systems:
http://www.microsoft.com/downloads/details.aspx?familyid=2ede1eb9-7f5f-411d-bbc3-5db46d80e0bb

Windows Vista (optionally with SP1 and SP2):
http://www.microsoft.com/downloads/details.aspx?familyid=8b5a9a95-9439-40c8-acef-000b919daa04

Windows Vista x64 Edition (optionally with SP1 and SP2):
http://www.microsoft.com/downloads/details.aspx?familyid=4a60f789-1a4a-49a8-8d13-fda989ed40be

Windows Server 2008 for 32-bit Systems (optionally with SP2):
http://www.microsoft.com/downloads/details.aspx?familyid=f9b487af-fe73-42a8-b240-d59c4321f95b

Windows Server 2008 for x64-based Systems (optionally with SP2):
http://www.microsoft.com/downloads/details.aspx?familyid=0d8a2a3e-d7d4-47fb-8364-16fce28e4d38

Windows Server 2008 for Itanium-based Systems (optionally with SP2):
http://www.microsoft.com/downloads/details.aspx?familyid=8962f0b6-f346-4e88-9d83-4d15b699dd9d

Windows 7 for 32-bit Systems:
http://www.microsoft.com/downloads/details.aspx?familyid=ad6f06d5-27db-445d-a8b2-c42adc90afc0

Windows 7 for x64-based Systems:
http://www.microsoft.com/downloads/details.aspx?familyid=70cd0270-77e9-492a-82d9-798364640c10

Windows Server 2008 R2 for x64-based Systems:
http://www.microsoft.com/downloads/details.aspx?familyid=ce78c019-ec08-4ec6-abec-334f5ec5cb76
        
Windows Server 2008 R2 for Itanium-based Systems:
http://www.microsoft.com/downloads/details.aspx?familyid=6442a77a-3c0d-4beb-b2d2-2885376c2135

PROVIDED AND/OR DISCOVERED BY:
The vendor credits Dan Kaminsky of IOActive.

ORIGINAL ADVISORY:
MS09-056 (KB974571):
http://www.microsoft.com/technet/security/bulletin/MS09-056.mspx

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