OpenBSD OpenSSH 3.0.1 UseLogin Option LD_LIBRARY_PATH privileges management

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7.6$0-$5k0.00

Summaryinfo

A vulnerability was found in OpenBSD OpenSSH 3.0.1 and classified as problematic. Impacted is an unknown function of the component UseLogin Option. Executing a manipulation of the argument LD_LIBRARY_PATH as part of Environment Variable can lead to privileges management. This vulnerability is registered as CVE-2001-0872. Furthermore, an exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability has been found in OpenBSD OpenSSH 3.0.1 (Connectivity Software) and classified as critical. This vulnerability affects an unknown code of the component UseLogin Option. The manipulation of the argument LD_LIBRARY_PATH as part of a Environment Variable leads to a privileges management vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

OpenSSH 3.0.1 and earlier with UseLogin enabled does not properly cleanse critical environment variables such as LD_PRELOAD, which allows local users to gain root privileges.

The weakness was published 12/04/2001 with OpenBSD as confirmed advisory (CERT.org). The advisory is available at kb.cert.org. This vulnerability was named CVE-2001-0872. The exploitation appears to be easy. Local access is required to approach this attack. No form of authentication is required for a successful exploitation. Technical details and also a exploit are known. 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 14928 (Debian DSA-091-1 : ssh - influencing login), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 38118 (OpenSSH UseLogin Environment Variable Passing Vulnerability).

Upgrading eliminates this vulnerability. It is possible to mitigate the problem by applying the configuration setting UseLogin = Off. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published 12 hours after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (7647), Tenable (14928), SecurityFocus (BID 3614†), OSVDB (688†) and Vulnerability Center (SBV-357†). Similar entry is available at VDB-17429. 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: 8.4
VulDB Meta Temp Score: 7.6

VulDB Base Score: 8.4
VulDB Temp Score: 7.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Privileges management
CWE: CWE-269 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 14928
Nessus Name: Debian DSA-091-1 : ssh - influencing login
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 53831
OpenVAS Name: Debian Security Advisory DSA 091-1 (ssh)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Config: UseLogin = Off

Timelineinfo

12/04/2001 🔍
12/04/2001 +0 days 🔍
12/04/2001 +0 days 🔍
12/05/2001 +0 days 🔍
12/21/2001 +16 days 🔍
12/21/2001 +0 days 🔍
09/12/2002 +265 days 🔍
12/12/2002 +90 days 🔍
09/29/2004 +657 days 🔍
07/11/2014 +3572 days 🔍
12/26/2024 +3821 days 🔍

Sourcesinfo

Vendor: openbsd.org

Advisory: kb.cert.org
Organization: OpenBSD
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2001-0872 (🔍)
GCVE (CVE): GCVE-0-2001-0872
GCVE (VulDB): GCVE-100-17770
CERT: 🔍
X-Force: 7647
SecurityFocus: 3614 - OpenSSH UseLogin Environment Variable Passing Vulnerability
OSVDB: 688 - OpenSSH UseLogin Environment Variable Local Command Execution
Vulnerability Center: 357 - OpenSSH UseLogin Environment Variable Passing vulnerability, High

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

Entryinfo

Created: 07/11/2014 12:04
Updated: 12/26/2024 05:40
Changes: 07/11/2014 12:04 (80), 05/06/2019 14:35 (5), 12/26/2024 05:40 (17)
Complete: 🔍
Cache ID: 216::103

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