Microsoft IIS 4.0 Redirect 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 classified as problematic has been found in Microsoft IIS 4.0. This affects an unknown part of the component Redirect Handler. This manipulation causes denial of service. The identification of this vulnerability is CVE-2001-0545. Furthermore, there is an exploit available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability classified as problematic was found in Microsoft IIS 4.0 (Web Server). Affected by this vulnerability is some unknown processing of the component Redirect Handler. 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. The summary by CVE is:

IIS 4.0 with URL redirection enabled allows remote attackers to cause a denial of service (crash) via a malformed request that specifies a length that is different than the actual length.

The weakness was shared 08/16/2001 by John Waters, NSFocus Security Team and Oded Horovitz as MS01-044 as confirmed bulletin (Technet). The advisory is shared at microsoft.com. This vulnerability is known as CVE-2001-0545. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are unknown but a public exploit is available.

After before and not just, there has been an exploit disclosed. It is possible to download the exploit at digitaloffense.net. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 10685 (Microsoft IIS ISAPI Filter Multiple Vulnerabilities (MS01-044)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Web Servers and running in the context r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 86346 (Microsoft IIS 4.0 URL Redirection Denial of Service Vulnerability (MS01-044)).

Applying the patch MS01-044 is able to eliminate this problem. The bugfix is ready for download at microsoft.com. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (6981), Tenable (10685), SecurityFocus (BID 3193†), OSVDB (5736†) and Vulnerability Center (SBV-3651†). The entries VDB-17368, VDB-17369, VDB-17370 and VDB-17568 are related to this item. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
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: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 10685
Nessus Name: Microsoft IIS ISAPI Filter Multiple Vulnerabilities (MS01-044)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 10767
OpenVAS Name: Tests for Nimda Worm infected HTML files
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: MS01-044

Timelineinfo

06/18/2001 🔍
06/19/2001 +1 days 🔍
08/15/2001 +57 days 🔍
08/15/2001 +0 days 🔍
08/15/2001 +0 days 🔍
08/16/2001 +0 days 🔍
10/30/2001 +75 days 🔍
02/04/2004 +827 days 🔍
04/09/2004 +64 days 🔍
07/10/2014 +3744 days 🔍
10/05/2025 +4105 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: MS01-044
Researcher: John Waters, NSFocus Security Team, Oded Horovitz
Status: Confirmed

CVE: CVE-2001-0545 (🔍)
GCVE (CVE): GCVE-0-2001-0545
GCVE (VulDB): GCVE-100-17569
X-Force: 6981 - Microsoft IIS URL redirection denial of service
SecurityFocus: 3193 - Microsoft IIS 5.0 In-Process Table Privelege Elevation Vulnerability
OSVDB: 5736 - Microsoft IIS Relative Path System Privilege Escalation
Vulnerability Center: 3651 - [MS01-044] IIS 4.0 With URL Redirection Enabled Allows DoS, Medium

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

Entryinfo

Created: 07/10/2014 11:42
Updated: 10/05/2025 19:40
Changes: 07/10/2014 11:42 (81), 05/19/2019 16:22 (4), 10/05/2025 19:40 (18)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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