Microsoft Windows NT 4.0/2000 NetBIOS Name Server denial of service

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Microsoft Windows NT 4.0/2000. The affected element is an unknown function of the component NetBIOS Name Server. Executing a manipulation can lead to denial of service. This vulnerability is tracked as CVE-2000-0673. The attack can be launched remotely. Moreover, an exploit is present. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Microsoft Windows NT 4.0/2000 (Operating System). It has been declared as problematic. This vulnerability affects an unknown part of the component NetBIOS Name Server. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. CVE summarizes:

The NetBIOS Name Server (NBNS) protocol does not perform authentication, which allows remote attackers to cause a denial of service by sending a spoofed Name Conflict or Name Release datagram, aka the "NetBIOS Name Server Protocol Spoofing" vulnerability.

The weakness was disclosed 07/27/2000 with Network Associates (Website). The advisory is available at nai.com. This vulnerability was named CVE-2000-0673. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are unknown but a public exploit is available. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

A public exploit has been developed in Windows Binary. It is possible to download the exploit at securityfocus.com. It is declared as proof-of-concept. As 0-day the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 10482 (MS00-047: NetBIOS Name Server Protocol Spoofing patch (269239)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 90145 (NetBIOS Vulnerability May Cause Duplicate Name on the Network Conflicts (MS00-047)).

Upgrading eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (5035), Exploit-DB (20106), Tenable (10482), SecurityFocus (BID 1514†) and Vulnerability Center (SBV-171†). The entry VDB-15805 is pretty similar. If you want to get best quality of vulnerability data, you may have to visit VulDB.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Programming Language: 🔍
Download: 🔍

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Nessus ID: 10482
Nessus Name: MS00-047: NetBIOS Name Server Protocol Spoofing patch (269239)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
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McAfee IPS: 🔍
McAfee IPS Version: 🔍

Timelineinfo

07/27/2000 🔍
07/27/2000 +0 days 🔍
07/27/2000 +0 days 🔍
07/27/2000 +0 days 🔍
07/27/2000 +0 days 🔍
07/28/2000 +1 days 🔍
10/22/2002 +816 days 🔍
06/25/2014 +4264 days 🔍
10/13/2025 +4128 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: nai.com
Organization: Network Associates
Status: Confirmed

CVE: CVE-2000-0673 (🔍)
GCVE (CVE): GCVE-0-2000-0673
GCVE (VulDB): GCVE-100-15802
X-Force: 5035 - Microsoft Windows NT/2000 NetBIOS Name Server spoofed name conflict
SecurityFocus: 1514 - Microsoft Windows NT/2000 NetBIOS Name Conflict Vulnerability
Vulnerability Center: 171 - [MS00-047] Dos in NetBios Name Server (NBNS) via Spoofed Name Conflict / Name Release Datagrams, Medium

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 06/25/2014 16:02
Updated: 10/13/2025 04:03
Changes: 06/25/2014 16:02 (66), 05/05/2019 11:21 (10), 06/07/2025 07:42 (18), 10/13/2025 04:03 (2)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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