Microsoft IIS 4.0/5.0 nsiislog.dll denial of service

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in Microsoft IIS 4.0/5.0. Impacted is an unknown function in the library nsiislog.dll. Executing a manipulation can lead to denial of service. This vulnerability is tracked as CVE-2003-0349. The attack can be launched remotely. Moreover, an exploit is present. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability classified as critical was found in Microsoft IIS 4.0/5.0 (Web Server). This vulnerability affects an unknown code block in the library nsiislog.dll. 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:

Buffer overflow in the streaming media component for logging multicast requests in the ISAPI for the logging capability of Microsoft Windows Media Services (nsiislog.dll), as installed in IIS 5.0, allows remote attackers to execute arbitrary code via a large POST request to nsiislog.dll.

The bug was discovered 05/28/2003. The weakness was disclosed 05/30/2003 by Brett Moore as MS03-019 as confirmed bulletin (Technet). The advisory is available at microsoft.com. This vulnerability was named CVE-2003-0349 since 05/28/2003. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details and also a public exploit are known. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

After 4 weeks, there has been an exploit disclosed. It is possible to download the exploit at immunitysec.com. It is declared as highly functional. The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 101016 (GLSA-201706-21 : nettle: Information disclosure), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gentoo Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 86558 (Microsoft Windows Media Services NSIISlog.DLL Remote Buffer Overflow Vulnerability (MS03-022)).

Applying the patch MS03-019 is able to eliminate this problem. The bugfix is ready for download at microsoft.com. A possible mitigation has been published 16 years after the disclosure of the vulnerability. Attack attempts may be identified with Snort ID 2129.

The vulnerability is also documented in the databases at X-Force (12652), Exploit-DB (16355), Tenable (101016), SecurityFocus (BID 8035†) and OSVDB (4535†). Additional details are provided at heise.de. The entries VDB-15, VDB-84, VDB-86 and VDB-85 are pretty similar. Once again VulDB remains the best source for vulnerability data.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.5
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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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: Highly functional
Download: 🔍

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Nessus ID: 101016
Nessus Name: GLSA-201706-21 : nettle: Information disclosure
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 802888
OpenVAS Name: Microsoft Windows Media Services ISAPI Extension Code Execution Vulnerabilities
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

MetaSploit ID: ms03_022_nsiislog_post.rb
MetaSploit Name: MS03-022 Microsoft IIS ISAPI nsiislog.dll ISAPI POST Overflow
MetaSploit File: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
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Patch: MS03-019

Snort ID: 2129
Snort Message: SERVER-IIS nsiislog.dll access
Snort Class: 🔍

Timelineinfo

05/28/2003 🔍
05/28/2003 +0 days 🔍
05/30/2003 +2 days 🔍
05/30/2003 +0 days 🔍
06/25/2003 +26 days 🔍
06/25/2003 +0 days 🔍
06/25/2003 +0 days 🔍
06/25/2003 +0 days 🔍
07/24/2003 +29 days 🔍
07/28/2003 +4 days 🔍
06/22/2017 +5077 days 🔍
06/23/2017 +1 days 🔍
08/17/2025 +2977 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: MS03-019
Researcher: Brett Moore
Status: Confirmed

CVE: CVE-2003-0349 (🔍)
GCVE (CVE): GCVE-0-2003-0349
GCVE (VulDB): GCVE-100-82

OVAL: 🔍

CERT: 🔍
X-Force: 12652 - Microsoft Windows 2000 and NT 4.0 Server IIS ISAPI nsiislog.dll extension POST request buffer overflow, High Risk
SecurityFocus: 8035 - Microsoft Windows Media Services NSIISlog.DLL Remote Buffer Overflow Vulnerability
Secunia: 9115
OSVDB: 4535 - Microsoft Media Services ISAPI nsiislog.dll POST Overflow
SecurityTracker: 1007059
Vulnerability Center: 2818

scip Labs: https://www.scip.ch/en/?labs.20161013
Misc.: 🔍
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Entryinfo

Created: 05/30/2003 02:00
Updated: 08/17/2025 18:55
Changes: 05/30/2003 02:00 (105), 07/24/2019 16:38 (3), 06/15/2024 21:43 (16), 06/22/2024 05:00 (1), 12/31/2024 04:39 (1), 03/08/2025 02:00 (1), 08/17/2025 18:55 (2)
Complete: 🔍
Cache ID: 216:147:103

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