OpenBSD OpenSSH 3.0/3.0p1 Kerberos improper authentication

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability was found in OpenBSD OpenSSH 3.0/3.0p1 and classified as critical. The affected element is an unknown function of the component Kerberos Handler. The manipulation results in improper authentication. This vulnerability is identified as CVE-2001-1507. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in OpenBSD OpenSSH 3.0/3.0p1 (Connectivity Software). It has been classified as critical. Affected is an unknown code of the component Kerberos Handler. The manipulation with an unknown input leads to a improper authentication vulnerability. CWE is classifying the issue as CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

OpenSSH before 3.0.1 with Kerberos V enabled does not properly authenticate users, which could allow remote attackers to login unchallenged.

The weakness was released 12/31/2001 by Jonas Eriksson with OpenBSD (Website). The advisory is available at openbsd.org. This vulnerability is traded as CVE-2001-1507 since 07/14/2005. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 10802 (OpenSSH < 3.0.1 Multiple Flaws), 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 38049 (OpenSSH Kerberos Arbitrary Privilege Elevation Vulnerability).

Upgrading to version 3.0.1 eliminates this vulnerability. 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 (7598), Tenable (10802), SecurityFocus (BID 3560†) and Vulnerability Center (SBV-4394†). 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: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
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: Improper authentication
CWE: CWE-287
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: 10802
Nessus Name: OpenSSH < 3.0.1 Multiple Flaws
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: OpenSSH 3.0.1

Timelineinfo

11/19/2001 🔍
11/19/2001 +0 days 🔍
11/19/2001 +0 days 🔍
11/20/2001 +1 days 🔍
12/31/2001 +41 days 🔍
12/31/2001 +0 days 🔍
06/02/2004 +884 days 🔍
07/14/2005 +407 days 🔍
07/11/2014 +3284 days 🔍
09/24/2025 +4093 days 🔍

Sourcesinfo

Vendor: openbsd.org

Advisory: openbsd.org
Researcher: Jonas Eriksson
Organization: OpenBSD
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2001-1507 (🔍)
GCVE (CVE): GCVE-0-2001-1507
GCVE (VulDB): GCVE-100-17826
X-Force: 7598
SecurityFocus: 3560 - OpenSSH Kerberos Arbitrary Privilege Elevation Vulnerability
Vulnerability Center: 4394 - OpenSSH with Kerberos 5 Authentication Enables Privilege Elevation, Medium

Entryinfo

Created: 07/11/2014 13:27
Updated: 09/24/2025 21:31
Changes: 07/11/2014 13:27 (69), 05/21/2019 17:58 (3), 09/24/2025 21:31 (20)
Complete: 🔍
Cache ID: 216:FAC:103

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

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