Microsoft KB Archive/250625

= MS00-024: Default Registry Key Permissions May Allow Privilege Elevation =

Article ID: 250625

Article Last Modified on 2/28/2007

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APPLIES TO


 * Microsoft Windows NT Server 4.0, Terminal Server Edition Service Pack 4
 * Microsoft Windows NT Server 4.0, Terminal Server Edition Service Pack 5
 * Microsoft Windows NT Server 4.0, Terminal Server Edition Service Pack 6
 * Microsoft Windows NT Workstation 4.0 Developer Edition
 * Microsoft Windows NT Workstation 4.0 Developer Edition
 * Microsoft Windows NT Workstation 4.0 Developer Edition
 * Microsoft Windows NT Workstation 4.0 Developer Edition
 * Microsoft Windows NT Workstation 4.0 Developer Edition
 * Microsoft Windows NT Workstation 4.0
 * Microsoft Windows NT Workstation 4.0 Developer Edition
 * Microsoft Windows NT Server 4.0 Standard Edition
 * Microsoft Windows NT 4.0 Service Pack 1
 * Microsoft Windows NT 4.0 Service Pack 2
 * Microsoft Windows NT 4.0 Service Pack 3
 * Microsoft Windows NT 4.0 Service Pack 4
 * Microsoft Windows NT 4.0 Service Pack 5
 * Microsoft Windows NT 4.0 Service Pack 6a
 * Microsoft Windows NT Server 4.0 Enterprise Edition
 * Microsoft Windows NT 4.0 Service Pack 4
 * Microsoft Windows NT 4.0 Service Pack 5
 * Microsoft Windows NT 4.0 Service Pack 6a
 * Microsoft BackOffice Small Business Server 4.0
 * Microsoft BackOffice Small Business Server 4.5
 * Microsoft BackOffice Server 4.0
 * Microsoft BackOffice Server 4.5

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This article was previously published under Q250625



SYMPTOMS
It may be possible for a malicious user to gain additional privileges on your Windows NT-based computer if the user can interactively log on to the computer. The unauthorized privileges include the ability to take the following actions:
 * Cause code to run in a local system context.
 * Cause code to run the next time another user logs on to the same computer.
 * Disable the security protection for a previously reported vulnerability.



Windows NT 4.0
To resolve this problem, obtain the individual package referenced below or obtain the Windows NT 4.0 Security Rollup Package. For additional information on the SRP, click the article number below to view the article in the Microsoft Knowledge Base:

299444 Post-Windows NT 4.0 Service Pack 6a Security Rollup Package (SRP)

The following files are available for download from the Microsoft Download Center:

x86: Download Q259496i.exe now

Alpha: Download Q259496a.exe now

For additional information about how to download Microsoft Support files, click the following article number to view the article in the Microsoft Knowledge Base:

119591 How to Obtain Microsoft Support Files from Online Services

Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help to prevent any unauthorized changes to the file. The English version of this fix should have the following file attributes or later:   Date      Time    Size    File name     Platform 04/11/00 08:19p  41,744  Regacl40.exe  Intel 04/12/00 03:43p  95,504  Regacl40.exe  Alpha

Microsoft Windows NT Server version 4.0, Terminal Server Edition
To resolve this problem, obtain the Windows NT Server 4.0, Terminal Server Edition, Security Rollup Package (SRP). For additional information about the SRP, click the article number below to view the article in the Microsoft Knowledge Base:

317636 Windows NT Server 4.0, Terminal Server Edition, Security Rollup Package



STATUS
Microsoft has confirmed that this problem may cause a degree of security vulnerability in Windows NT 4.0.



MORE INFORMATION
For related information about this problem, please visit the following Microsoft Web sites:

http://www.microsoft.com/technet/security/bulletin/ms00-008.mspx

http://www.microsoft.com/technet/security/bulletin/ms00-024.mspx

For additional security-related information about Microsoft products, please visit the following Microsoft Web site:

http://www.microsoft.com/security/

Additional query words: ACL security_patch

Keywords: kbbug kbfix kbgraphxlinkcritical kbsecurity kbsecbulletin KB250625

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