OpenBSD OpenSSH 1.2/1.2.3/2.1 UseLogin Option 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 described as critical has been identified in OpenBSD OpenSSH 1.2/1.2.3/2.1. This affects an unknown function of the component UseLogin Option. Such manipulation leads to privileges management. This vulnerability is referenced as CVE-2000-0525. Furthermore, an exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in OpenBSD OpenSSH 1.2/1.2.3/2.1 (Connectivity Software). It has been rated as critical. Affected by this issue is an unknown code block of the component UseLogin Option. 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, integrity, and availability. CVE summarizes:

OpenSSH does not properly drop privileges when the UseLogin option is enabled, which allows local users to execute arbitrary commands by providing the command to the ssh daemon.

The weakness was published 10/06/2000 by Markus Friedl (FIRST) (Website). The advisory is available at openbsd.org. This vulnerability is handled as CVE-2000-0525. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are unknown but an exploit is available. This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

After immediately, there has been an exploit disclosed. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 55992 (SunSSH < 1.1.1 / 1.3 CBC Plaintext Disclosure), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Misc. and running in the context r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 38026 (OpenSSH Login Vulnerability).

Upgrading to version 2.1.1 eliminates this vulnerability. A possible mitigation has been published 9 years after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (4646), Tenable (55992), SecurityFocus (BID 1334†), OSVDB (341†) and Vulnerability Center (SBV-150†). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

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: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 55992
Nessus Name: SunSSH < 1.1.1 / 1.3 CBC Plaintext Disclosure
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
Exposure Time: 🔍
Exploit Delay Time: 🔍

Upgrade: OpenSSH 2.1.1

Timelineinfo

06/08/2000 🔍
06/08/2000 +0 days 🔍
06/08/2000 +0 days 🔍
10/06/2000 +120 days 🔍
10/06/2000 +0 days 🔍
09/12/2002 +706 days 🔍
10/16/2002 +33 days 🔍
12/11/2008 +2248 days 🔍
08/29/2011 +991 days 🔍
06/25/2014 +1031 days 🔍
10/14/2025 +4129 days 🔍

Sourcesinfo

Vendor: openbsd.org

Advisory: openbsd.org
Researcher: Markus Friedl (FIRST)
Status: Confirmed

CVE: CVE-2000-0525 (🔍)
GCVE (CVE): GCVE-0-2000-0525
GCVE (VulDB): GCVE-100-15650
X-Force: 4646
SecurityFocus: 1334 - OpenSSH UseLogin Vulnerability
OSVDB: 341 - OpenSSH UseLogin Local Privilege Escalation
Vulnerability Center: 150 - OpenSSH execute Command, High

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

Entryinfo

Created: 06/25/2014 11:17
Updated: 10/14/2025 02:49
Changes: 06/25/2014 11:17 (71), 05/05/2019 09:56 (5), 10/14/2025 02:49 (20)
Complete: 🔍
Cache ID: 216:662:103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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