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).
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Subject: Microsoft Windows CryptoAPI Two Spoofing Vulnerabilities
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