Intrusion Prevention

MS.Windows.SMB.Server.NTLM.Authentication.Bypass

Description

This indicates an attack attempt against a weakness in the NTLM authentication used in Microsoft Windows SMB Server.
The vulnerability is caused by a cryptographic flaw. It may allow a remote attacker to gain escalated privileges.

Affected Products

Windows 2000 Service Pack 4
Windows XP Service Pack 2 and Windows XP Service Pack 3
Windows XP Professional x64 Edition Service Pack 2
Windows Server 2003 Service Pack 2
Windows Server 2003 x64 Edition Service Pack 2
Windows Server 2003 with SP2 for Itanium-based Systems
Windows Vista, Windows Vista Service Pack 1, and Windows Vista Service Pack 2
Windows Vista x64 Edition, Windows Vista x64 Edition Service Pack 1, and Windows Vista x64 Edition Service Pack 2
Windows Server 2008 for 32-bit Systems and Windows Server 2008 for 32-bit Systems Service Pack 2
Windows Server 2008 for x64-based Systems and Windows Server 2008 for x64-based Systems Service Pack 2
Windows Server 2008 for Itanium-based Systems and Windows Server 2008 for Itanium-based Systems Service Pack 2
Windows 7 for 32-bit Systems
Windows 7 for x64-based Systems
Windows Server 2008 R2 for x64-based Systems
Windows Server 2008 R2 for Itanium-based Systems

Impact

Privilege Escalation: Remote attackers can leverage their privilege on vulnerable systems.

Recommended Actions

Apply the latest update from the vendor.
http://technet.microsoft.com/en-us/security/bulletin/MS10-012.mspx

CVE References

CVE-2010-0231