University of Washington wu-ftpd up to 2.6.1 Debug Mode PASV privileges management

CVSS Meta Temp Score
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CTI Interest Score
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8.8$0-$5k0.00

Summaryinfo

A vulnerability has been found in University of Washington wu-ftpd up to 2.6.1 and classified as critical. Affected is an unknown function of the component Debug Mode. The manipulation of the argument PASV leads to privileges management. This vulnerability is referenced as CVE-2001-0187. Furthermore, an exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in University of Washington wu-ftpd up to 2.6.1 (File Transfer Software) and classified as critical. This issue affects an unknown part of the component Debug Mode. The manipulation of the argument PASV with an unknown input leads to a privileges management vulnerability. Using CWE to declare the problem leads to CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Format string vulnerability in wu-ftp 2.6.1 and earlier, when running with debug mode enabled, allows remote attackers to execute arbitrary commands via a malformed argument that is recorded in a PASV port assignment.

The weakness was published 03/26/2001 (Website). The advisory is shared at debian.org. The identification of this vulnerability is CVE-2001-0187. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known. MITRE ATT&CK project uses the attack technique T1068 for this issue.

The exploit is available at exploit-db.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 11331 (WU-FTPD Debug Mode Client Hostname Remote Format String), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FTP and running in the context r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 27058 (WU-FTPd Debug Mode Client Hostname Format String Vulnerability).

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (6020), Exploit-DB (20594), Tenable (11331), SecurityFocus (BID 2296†) and Vulnerability Center (SBV-1404†). 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: 🔍
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CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 8.8

VulDB Base Score: 9.8
VulDB Temp Score: 8.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Privileges management
CWE: CWE-269 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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

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Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 11331
Nessus Name: WU-FTPD Debug Mode Client Hostname Remote Format String
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 53779
OpenVAS Name: Debian Security Advisory DSA 016-1 (wu-ftpd)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/23/2001 🔍
03/26/2001 +62 days 🔍
03/26/2001 +0 days 🔍
03/26/2001 +0 days 🔍
03/09/2003 +713 days 🔍
07/10/2003 +123 days 🔍
07/03/2014 +4011 days 🔍
10/08/2025 +4115 days 🔍

Sourcesinfo

Vendor: washington.edu

Advisory: debian.org
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2001-0187 (🔍)
GCVE (CVE): GCVE-0-2001-0187
GCVE (VulDB): GCVE-100-16565
X-Force: 6020
SecurityFocus: 2296 - Wu-Ftpd Debug Mode Client Hostname Format String Vulnerability
Vulnerability Center: 1404 - wu-ftp < 2.6.1 Running in Debug Mode Allows Arbitrary Code Execution, High

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

Entryinfo

Created: 07/03/2014 16:09
Updated: 10/08/2025 05:20
Changes: 07/03/2014 16:09 (67), 05/10/2019 16:44 (4), 01/22/2025 02:32 (27), 10/08/2025 05:20 (2)
Complete: 🔍
Cache ID: 216::103

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