Rhinosoft Serv-U FTP Server up to 5.x MS DOS Device Name input validation

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Rhinosoft Serv-U FTP Server up to 5.x. This affects an unknown part of the component MS DOS Device Name Handler. The manipulation with the input STOU leads to input validation. This vulnerability is uniquely identified as CVE-2004-1675. The attack is possible to be carried out remotely. Moreover, an exploit is present. It is recommended to apply restrictive firewalling.

Detailsinfo

A vulnerability was found in Rhinosoft Serv-U FTP Server up to 5.x (File Transfer Software). It has been rated as problematic. This issue affects an unknown functionality of the component MS DOS Device Name Handler. The manipulation with the input value STOU leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is availability. The summary by CVE is:

Serv-U FTP server 4.x and 5.x allows remote attackers to cause a denial of service (application crash) via a STORE UNIQUE (STOU) command with an MS-DOS device name argument such as (1) COM1, (2) LPT1, (3) PRN, or (4) AUX.

The bug was discovered 09/13/2004. The weakness was disclosed 09/13/2004 by Patrick (Website). It is possible to read the advisory at secunia.com. The identification of this vulnerability is CVE-2004-1675 since 02/21/2005. 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.

After even before and not, there has been an exploit disclosed. The exploit is available at secunia.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 14709 (Serv-U 4.x-5.x STOU Command MS-DOS Argument Remote DoS), 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 27246 (RhinoSoft Serv-U FTP Server Remote Denial of Service Vulnerability).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at serv-u.com.Addressing this vulnerability is possible by firewalling . The best possible mitigation is suggested to be applying a restrictive firewalling. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (17329), Exploit-DB (463), Tenable (14709), SecurityFocus (BID 11155†) and OSVDB (9898†). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.9
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
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: 14709
Nessus Name: Serv-U 4.x-5.x STOU Command MS-DOS Argument Remote DoS
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 14709
OpenVAS Name: FTP Serv-U 4.x 5.x DoS
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

ATK: 211
Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Firewall
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: serv-u.com

Timelineinfo

09/11/2004 🔍
09/11/2004 +0 days 🔍
09/11/2004 +0 days 🔍
09/11/2004 +0 days 🔍
09/13/2004 +2 days 🔍
09/13/2004 +0 days 🔍
09/13/2004 +0 days 🔍
09/13/2004 +0 days 🔍
09/13/2004 +0 days 🔍
09/13/2004 +0 days 🔍
09/21/2004 +7 days 🔍
09/27/2004 +6 days 🔍
02/21/2005 +147 days 🔍
07/06/2025 +7440 days 🔍

Sourcesinfo

Advisory: secunia.com⛔
Researcher: Patrick
Status: Confirmed

CVE: CVE-2004-1675 (🔍)
GCVE (CVE): GCVE-0-2004-1675
GCVE (VulDB): GCVE-100-827
X-Force: 17329 - Serv-U FTP Server STOU denial of service, Medium Risk
SecurityFocus: 11155 - RhinoSoft Serv-U FTP Server Remote Denial Of Service Vulnerability
Secunia: 12507 - Serv-U FTP Server "STOU" Command Denial of Service Vulnerability, Moderately Critical
OSVDB: 9898 - Serv-U FTP Server STOU Command MS-DOS Argument Remote DoS
Vulnerability Center: 5428 - DoS in RhinoSoft Serv-U FTP Server via STOU Commands with Reserved DOS Device Names, Medium

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

Entryinfo

Created: 09/13/2004 14:25
Updated: 07/06/2025 16:21
Changes: 09/13/2004 14:25 (99), 06/29/2019 10:44 (1), 07/06/2025 16:21 (24)
Complete: 🔍
Cache ID: 216:DE6:103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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