CVE-1999-0225: Microsoft Windows NT denial of service in SMB logon request

CVE-1999-0225 · Severity: medium · CVSS 5 · Published 1998-02-14

A vulnerability in Windows NT 4.0 allows an attacker to remotely crash the operating system. By sending a specially crafted login request over the network, an attacker can cause the system to stop responding or reboot. This results in a denial of service, disrupting business operations and making the server unavailable to legitimate users.

Technologies: Microsoft Windows Nt. Vendors: Microsoft.

Quick answers

Is CVE-1999-0225 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-1999-0225 being exploited in the wild.
How severe is CVE-1999-0225?
Medium severity, with a CVSS score of 5, published 14 February 1998.
Which products and versions are affected?
Microsoft Windows NT 4.0.
Is there a fix for CVE-1999-0225?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-1999-0225 attacked?
It is attacked over the network, in an operating system.
Am I affected by CVE-1999-0225?
Check whether you run Microsoft Windows Nt. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A denial of service vulnerability exists in the SMB (Server Message Block) implementation of Windows NT 4.0. The flaw is triggered when the system processes a malformed SMB logon request where the actual payload size differs from the size specified in the packet header. A remote, unauthenticated attacker can exploit this by sending a crafted packet to the target system, leading to a system crash or hang. Microsoft addressed this issue in Knowledge Base article 180963.

Affected products

  • Microsoft Windows NT 4.0

Timeline

  • 1998-02-14: advisory: NVD published date

References

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