Microsoft Windows NT 4.0/2000 NNTP Service memory leak

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Microsoft Windows NT 4.0/2000. This issue affects some unknown processing of the component NNTP Service. Performing a manipulation results in memory leak. This vulnerability was named CVE-2001-0543. There is no available exploit. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Microsoft Windows NT 4.0/2000 (Operating System). This affects some unknown processing of the component NNTP Service. The manipulation with an unknown input leads to a memory leak vulnerability. CWE is classifying the issue as CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. This is going to have an impact on availability. The summary by CVE is:

Memory leak in NNTP service in Windows NT 4.0 and Windows 2000 allows remote attackers to cause a denial of service (memory exhaustion) via a large number of malformed posts.

The weakness was presented 09/20/2001 with Microsoft as MS01-043 as confirmed bulletin (Technet). The advisory is shared at microsoft.com. This vulnerability is uniquely identified as CVE-2001-0543. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available.

The commercial vulnerability scanner Qualys is able to test this issue with plugin 54009 (Microsoft Window's NNTP Denial of Service Vulnerability (MS01-043)).

Applying the patch MS01-043 is able to eliminate this problem. The bugfix is ready for download at microsoft.com.

The vulnerability is also documented in the databases at X-Force (6977), SecurityFocus (BID 3183†) and Vulnerability Center (SBV-3987†). See VDB-17371 for similar entry. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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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: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory leak
CWE: CWE-401 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: MS01-043

Timelineinfo

08/15/2001 🔍
08/15/2001 +0 days 🔍
09/20/2001 +36 days 🔍
09/20/2001 +0 days 🔍
03/16/2004 +908 days 🔍
07/09/2014 +3767 days 🔍
10/05/2025 +4106 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: MS01-043
Organization: Microsoft
Status: Confirmed

CVE: CVE-2001-0543 (🔍)
GCVE (CVE): GCVE-0-2001-0543
GCVE (VulDB): GCVE-100-17373

OVAL: 🔍

X-Force: 6977 - Microsoft Windows NT and 2000 NNTP memory leak denial of service
SecurityFocus: 3183 - Microsoft Windows NNTP Denial of Service Vulnerability
Vulnerability Center: 3987 - [MS01-043] DoS in Microsoft Windows 2000 / NT NNTP via Multiple Malformed Posts, Medium

See also: 🔍

Entryinfo

Created: 07/09/2014 12:24
Updated: 10/05/2025 19:40
Changes: 07/09/2014 12:24 (44), 05/20/2019 14:58 (23), 10/05/2025 19:40 (18)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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