This article was previously published under Q267864
This article has been archived. It is offered "as is" and will no longer be updated.
Microsoft has released a tool that corrects the permissions on several registry values in Microsoft Windows NT 4.0. The default permissions could allow a malicious user to gain additional privileges on an affected machine.
The "MTS Package Administration" key, HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Transaction Server\Packages, includes information about which users are allowed to install and change Microsoft Transaction Server (MTS) packages. By adding herself as an MTS manager, a malicious user could gain the ability to add, delete, or change MTS packages. Although it might be possible in some cases to make the needed registry changes remotely, the malicious user would still need the ability to log onto the affected comptuer interactively in order to exercise her new privileges. MTS is not installed on Windows NT 4.0 machines by default.
For additional information about other registry keys affected by this tool, click the article numbers below to view the articles in the Microsoft Knowledge Base:
265714 Windows NT 4.0 SNMP Registry Entries Are Readable
267861 RAS Registry Modification Allowed Without Administrative Rights
For additional information about this vulnerability, see the following Microsoft Web site:
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 file is available for download from the Microsoft Download Center:
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.NOTE: Due to file dependencies, this patch requires Windows NT 4.0 Service Pack 5 (SP5) or later.
The English version of this fix should have the following file attributes or later:
Date Time Size File name Platform --------------------------------------------------- 06/23/2000 08:28p 42,256 Regacl40.exe Intel 06/23/2000 08:28p 161,040 Tcpcfg.dll Intel 06/23/2000 08:27p 96,016 Regacl40.exe Alpha 06/23/2000 08:26p 242,960 Tcpcfg.dll Alpha
Microsoft has confirmed that this problem may cause a degree of security vulnerability in Microsoft Windows NT 4.0.