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Microsoft Windows CryptoAPI X.509 Spoofing Vulnerabilities (974571)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
This host is missing a critical security update according to Microsoft Bulletin MS09-056.
Insight
Insight
- The issue is due to the Windows CryptoAPI incorrectly parsing a null terminator as the end of any values identified by an Object Identifier (OID) when processing ASN.1 information from X.509 certificates. - An integer overflow error in the Windows CryptoAPI when parsing ASN.1 object identifiers from X.509 certificates, which could allow an attacker to generate a malicious certificate that would be parsed incorrectly by the Windows CryptoAPI.
Affected Software
Affected Software
Microsoft Windows 7 Microsoft Windows 2K Service Pack 4 and prior. Microsoft Windows XP Service Pack 3 and prior. Microsoft Windows 2K3 Service Pack 2 and prior. Microsoft Windows Vista Service Pack 1/2 and prior. Microsoft Windows Server 2008 Service Pack 1/2 and prior.
Solution
Solution
The vendor has released updates. Please see the references for more information.