ProFTPD up to 1.2.9 ACL CIDR Address privileges management

CVSS Meta Temp Score
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in ProFTPD up to 1.2.9. The affected element is an unknown function of the component ACL CIDR Address Handler. Such manipulation leads to privileges management. This vulnerability is traded as CVE-2004-0432. The attack may be launched remotely. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in ProFTPD up to 1.2.9 (File Transfer Software) and classified as critical. Affected by this issue is an unknown function of the component ACL CIDR Address Handler. The manipulation 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, and integrity. CVE summarizes:

ProFTPD 1.2.9 treats the Allow and Deny directives for CIDR based ACL entries as if they were AllowAll, which could allow FTP clients to bypass intended access restrictions.

The bug was discovered 11/04/2003. The weakness was shared 05/03/2004 by Jindrich Makovicka (Website). The advisory is shared for download at bugs.proftpd.org. This vulnerability is handled as CVE-2004-0432 since 05/03/2004. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1068.

The vulnerability was handled as a non-public zero-day exploit for at least 180 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 14140 (Mandrake Linux Security Advisory : proftpd (MDKSA-2004:041)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Mandriva Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 27368 (ProFTPD CIDR Addressing ACL and SITE CHGRP Vulnerabilities).

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at proftpd.org. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (16038), Tenable (14140), SecurityFocus (BID 10252†), OSVDB (5744†) and Secunia (SA11527†). proftpd.org is providing further details. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.2

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Privileges management
CWE: CWE-269 / CWE-266
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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Nessus ID: 14140
Nessus Name: Mandrake Linux Security Advisory : proftpd (MDKSA-2004:041)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 52464
OpenVAS Name: FreeBSD Ports: proftpd
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Patch: proftpd.org

Timelineinfo

11/04/2003 🔍
04/30/2004 +178 days 🔍
05/02/2004 +2 days 🔍
05/03/2004 +1 days 🔍
05/03/2004 +0 days 🔍
05/03/2004 +0 days 🔍
05/03/2004 +0 days 🔍
05/05/2004 +1 days 🔍
07/31/2004 +87 days 🔍
08/18/2004 +18 days 🔍
10/19/2005 +427 days 🔍
07/12/2025 +7206 days 🔍

Sourcesinfo

Advisory: bugs.proftpd.org
Researcher: Jindrich Makovicka
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2004-0432 (🔍)
GCVE (CVE): GCVE-0-2004-0432
GCVE (VulDB): GCVE-100-644
X-Force: 16038 - ProFTPD CIDR entry ACL bypass, Medium Risk
SecurityFocus: 10252
Secunia: 11527 - ProFTPD CIDR Addressing ACL and "site chgrp" Security Issues, Moderately Critical
OSVDB: 5744 - ProFTPD CIDR IP Subnet ACL Bypass
Vulnerability Center: 9423 - ProFTPD Access Bypass due to Incorrect Parsing, High

Misc.: 🔍

Entryinfo

Created: 05/05/2004 14:33
Updated: 07/12/2025 20:41
Changes: 05/05/2004 14:33 (89), 06/07/2017 16:04 (2), 03/09/2021 14:01 (2), 07/12/2025 20:41 (18)
Complete: 🔍
Cache ID: 216:26D:103

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