Microsoft KB Archive/241414

= NtSetInformationObject Does Not Check Object Handle in C2 Security Services =

Article ID: 241414

Article Last Modified on 9/11/2007

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APPLIES TO


 * Microsoft Windows NT Server 4.0, Terminal Server Edition
 * Microsoft Windows NT Server 4.0 Standard Edition
 * Microsoft Windows NT Workstation 4.0 Developer Edition
 * Microsoft Windows NT Server 4.0 Enterprise Edition

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This article was previously published under Q241414



SYMPTOMS
When you are processing a program with Microsoft C2 Security Services (C2SS) on a computer running Windows NT 4.0, the NtSetInformationObject function does not check to verify that a caller remains with the original handle and does not change from a user-mode handle to a kernel-mode handle. Because of the upcoming access-mode changes to object handles, it is important that NtSetInformationObject perform this check for object handle protection.



Windows NT Server or Workstation 4.0
To resolve this problem, obtain the latest service pack for Windows NT 4.0 or the individual software update. For information on obtaining the latest service pack, please go to:


 * http://www.microsoft.com/windows/servicepacks/ -or-


 * 152734how to obtain the latest windows nt 4.0 service pack

For information on obtaining the individual software update, contact Microsoft Product Support Services. For a complete list of Microsoft Product Support Services phone numbers and information on support costs, please go to the following address on the World Wide Web:

http://support.microsoft.com/directory/overview.asp

Windows NT Server 4.0, Terminal Server Edition
To resolve this problem, obtain the latest service pack for Windows NT Server 4.0, Terminal Server Edition. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

152734 How to Obtain the Latest Windows NT 4.0 Service Pack



STATUS
Microsoft has confirmed that this is a problem in Windows NT 4.0 and Windows NT Server 4.0, Terminal Server Edition.

This problem was first corrected in Windows NT Server 4.0 Service Pack 6 and Windows NT Server 4.0, Terminal Server Edition Service Pack 6.



MORE INFORMATION
After you install Windows NT 4.0 Service Pack 6 (SP6), the NtSetInformationObject function maintains this checking process by passing PreviousMode to the ObpSetHandleAttributes function and using a KERNEL OBJECT flag in the object.

Additional query words: management

Keywords: kbbug kbfix KB241414

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