XML.Signature.HMAC.Truncation.Authentication.Bypass

Release Date Jun 09, 2010
Severity high
Impact Security Bypass: Remote attackers can bypass security checking of vulnerable systems.
Description This indicates an attack attempt to exploit an authentication-bypass vulnerability in multiple products. The vulnerability is caused by the improper way that the W3C XML Signature Syntax and Processing (XMLDsig) recommendation. It could allow an attacker to tamper with signed XML content without being detected.
Affected Products Microsoft .NET Framework 1.1 Service Pack 1 Microsoft .NET Framework 1.0 Service Pack 3 Microsoft .NET Framework 2.0 Service Pack 1 Microsoft .NET Framework 2.0 Service Pack 2 Microsoft .NET Framework 3.5 Microsoft .NET Framework 3.5 Service Pack 1 Microsoft .NET Framework 3.5.1 Other products may also be affected.
Recommended Actions Apply the patch, available from the vendor's web site: http://www.microsoft.com/technet/security/Bulletin/MS10-041.mspx
Coverage IPS VCM
Common Vulnerabilities and Exposures (CVE) CVE-2009-0217
Reference/s http://technet.microsoft.com/en-us/security/bulletin/MS10-041.mspx (MS-ID)

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