ProFTPD up to 1.2.10 User Account information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in ProFTPD up to 1.2.10. Impacted is an unknown function of the component User Account Handler. This manipulation causes information disclosure. This vulnerability is tracked as CVE-2004-1602. The attack is possible to be carried out remotely. Moreover, an exploit is present. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability was found in ProFTPD up to 1.2.10 (File Transfer Software). It has been declared as problematic. Affected by this vulnerability is an unknown code of the component User Account Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. The summary by CVE is:

ProFTPD 1.2.x, including 1.2.8 and 1.2.10, responds in a different amount of time when a given username exists, which allows remote attackers to identify valid usernames by timing the server response.

The bug was discovered 10/15/2004. The weakness was disclosed 10/14/2004 by Leon Juranic with LSS Security Team (Website). It is possible to read the advisory at security.lss.hr. This vulnerability is known as CVE-2004-1602 since 02/20/2005. 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. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

After 2 days, there has been an exploit disclosed. It is possible to download the exploit at security.lss.hr. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 15484 (ProFTPD Login Timing Account Name Enumeration), 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 27255 (ProFTPD Authentication Delay Username Enumeration Vulnerability).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at proftpd.org.

The vulnerability is also documented in the databases at X-Force (17724), Exploit-DB (581), Tenable (15484), SecurityFocus (BID 11430†) and OSVDB (10758†). Additional details are provided at securityfocus.com. The entries VDB-1095 and VDB-1123 are pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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Name

Version

License

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

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
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: 15484
Nessus Name: ProFTPD Login Timing Account Name Enumeration
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Patch: proftpd.org

Timelineinfo

10/14/2004 🔍
10/14/2004 +0 days 🔍
10/15/2004 +1 days 🔍
10/15/2004 +0 days 🔍
10/15/2004 +0 days 🔍
10/15/2004 +0 days 🔍
10/15/2004 +0 days 🔍
10/15/2004 +0 days 🔍
10/15/2004 +0 days 🔍
10/17/2004 +1 days 🔍
10/18/2004 +1 days 🔍
10/28/2004 +10 days 🔍
02/20/2005 +115 days 🔍
07/06/2025 +7441 days 🔍

Sourcesinfo

Advisory: security.lss.hr
Researcher: Leon Juranic
Organization: LSS Security Team
Status: Confirmed

CVE: CVE-2004-1602 (🔍)
GCVE (CVE): GCVE-0-2004-1602
GCVE (VulDB): GCVE-100-907
X-Force: 17724 - ProFTPD could allow an attacker to obtain valid accounts, Medium Risk
SecurityFocus: 11430 - ProFTPD Authentication Delay Username Enumeration Vulnerability
Secunia: 12836 - ProFTPD User Enumeration Weakness, Not Critical
OSVDB: 10758 - ProFTPD Login Timing Account Name Enumeration
SecurityTracker: 1011687
SecuriTeam: securiteam.com
Vulnerability Center: 5674 - ProFTPd <= 1.2.10 Allows Brute-Forcing of Usernames, Medium

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

Entryinfo

Created: 10/18/2004 11:36
Updated: 07/06/2025 16:39
Changes: 10/18/2004 11:36 (96), 06/29/2019 16:43 (2), 03/10/2021 07:21 (2), 12/29/2024 21:47 (16), 07/06/2025 16:39 (2)
Complete: 🔍
Cache ID: 216::103

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