OpenBSD OpenSSH 3.9 Default Configuration privileges management

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.5$5k-$25k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in OpenBSD OpenSSH 3.9. This impacts an unknown function of the component Default Configuration. Performing a manipulation results in privileges management. This vulnerability is known as CVE-2004-1653. No exploit is available.

Detailsinfo

A vulnerability classified as critical has been found in OpenBSD OpenSSH 3.9 (Connectivity Software). This affects some unknown functionality of the component Default Configuration. The manipulation with an unknown input leads to a privileges management vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, and integrity. The summary by CVE is:

The default configuration for OpenSSH enables AllowTcpForwarding, which could allow remote authenticated users to perform a port bounce, when configured with an anonymous access program such as AnonCVS.

The weakness was published 08/31/2004 by Dragos Ruiu (Website). The advisory is shared at archives.neohapsis.com. This vulnerability is uniquely identified as CVE-2004-1653. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 07/06/2025). MITRE ATT&CK project uses the attack technique T1068 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 17744 (OpenSSH >= 2.3.0 AllowTcpForwarding Port Bouncing), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Misc.. The commercial vulnerability scanner Qualys is able to test this issue with plugin 42407 (OpenSSH AllowTcpForwarding Port Bounce Vulnerability).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at X-Force (17213), Tenable (17744), OSVDB (9562†), SecurityTracker (ID 1011143†) and Vulnerability Center (SBV-33985†). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

VulDB Base Score: 6.5
VulDB Temp Score: 6.5
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: 17744
Nessus Name: OpenSSH >= 2.3.0 AllowTcpForwarding Port Bouncing
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 103247
OpenVAS Name: OpenBSD OpenSSH 3.9 Port Bounce Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/31/2004 🔍
08/31/2004 +0 days 🔍
08/31/2004 +0 days 🔍
09/03/2004 +3 days 🔍
02/21/2005 +170 days 🔍
12/01/2011 +2474 days 🔍
12/06/2011 +5 days 🔍
04/14/2015 +1225 days 🔍
07/06/2025 +3736 days 🔍

Sourcesinfo

Vendor: openbsd.org

Advisory: archives.neohapsis.com
Researcher: Dragos Ruiu
Status: Not defined
Confirmation: 🔍

CVE: CVE-2004-1653 (🔍)
GCVE (CVE): GCVE-0-2004-1653
GCVE (VulDB): GCVE-100-22185
X-Force: 17213
OSVDB: 9562 - OpenSSH Default Configuration Anon SSH Service Port Bounce Weakness
SecurityTracker: 1011143
Vulnerability Center: 33985 - OpenSSH Default Configuration Allows Port Bounce, Medium

Entryinfo

Created: 04/14/2015 13:18
Updated: 07/06/2025 16:21
Changes: 04/14/2015 13:18 (58), 04/05/2017 15:03 (8), 06/30/2021 09:14 (4), 06/30/2021 09:19 (1), 11/21/2024 18:47 (15), 07/06/2025 16:21 (2)
Complete: 🔍
Cache ID: 216:4E8:103

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

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