News

Microsoft Warns of New NT 4.0 Security Breach

In a bulletin dated January 21, Microsoft detailed a security vulnerability in a Windows NT 4.0 administrative utility. Since then, Microsoft has learned that the vulnerability could also affect Windows NT 4.0 servers and workstations.

The RDISK utility is used to create an Emergency Repair Disk (ERD) in order to record machine state information as a contingency against system failure. During execution, RDISK creates a temporary file containing an enumeration of the registry. The access control lists (ACLs) on the file allow global read permission, and as a result, a malicious user who knew that the administrator was running RDISK could open the file and read the registry enumeration information as it was being created. RDISK erases the file upon successful completion, so under normal conditions there would be no lasting vulnerability.

Windows NT 4.0 Workstation, Server, Enterprise Edition, and Terminal Server Edition are all affected by the vulnerability. The patch for Intel machines running NT 4.0 Workstation, Server, or Server, Enterprise Edition is available at http://www.microsoft.com/Downloads/Release.asp?ReleaseID=17745. The patch for Alpha machines running the same versions of NT is available at http://www.microsoft.com/Downloads/Release.asp?ReleaseID=17747. The patch for NT 4.0 Server, Terminal Server Edition is available at http://www.microsoft.com/Downloads/Release.asp?ReleaseID=17384. -- Isaac Slepner

About the Author

Scott Bekker is editor in chief of Redmond Channel Partner magazine.

Featured

  • Black Sky White Cloud Graphic

    Microsoft Expands Cloud Programs for Specific Industries

    Microsoft on Wednesday described an expansion of its industry-specific cloud efforts by announcing three new program additions, centered on the needs of finance, manufacturing and nonprofit organizations.

  • Reusing Content Within Microsoft Word

    A new Microsoft Word feature lets you insert a block of text (or other content) from a different file without leaving the document you're currently working on.

  • Replacement SSDs Now Available for Surface Pro 7+ PCs

    Microsoft on Tuesday announced that sales of solid-state drive (SSD) "commercial spares" replacement kits for Surface Pro 7+ PCs is now open, but only in the U.S. market.

  • Azure AD My Apps Collections and Risk Detections Commercially Released

    Microsoft on Friday announced a couple of new commercially released Azure Active Directory features, namely My Apps "collections" and new "risk detections" capabilities.

comments powered by Disqus