OpenBSD OpenSSH 4.5 libutil login.conf privileges management

CVSS Meta Temp Score
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CTI Interest Score
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3.6$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in OpenBSD OpenSSH 4.5. Impacted is an unknown function of the file login.conf of the component libutil. The manipulation leads to privileges management. This vulnerability is traded as CVE-2001-1029. Furthermore, there is an exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in OpenBSD OpenSSH 4.5 (Connectivity Software) and classified as problematic. This issue affects some unknown processing of the file login.conf of the component libutil. 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. The summary by CVE is:

libutil in OpenSSH on FreeBSD 4.4 and earlier does not drop privileges before verifying the capabilities for reading the copyright and welcome files, which allows local users to bypass the capabilities checks and read arbitrary files by specifying alternate copyright or welcome files.

The bug was discovered 09/20/2001. The weakness was shared 09/20/2001 by Przemyslaw Frasunek (Website). The advisory is shared at archives.neohapsis.com. The identification of this vulnerability is CVE-2001-1029. The exploitation is known to be easy. An attack has to be approached locally. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known. MITRE ATT&CK project uses the attack technique T1068 for this issue.

After immediately, there has been an exploit disclosed. The exploit is available at exploit-db.com. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 10823 (OpenSSH < 3.0.2 Multiple Vulnerabilities), 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 38118 (OpenSSH UseLogin Environment Variable Passing Vulnerability).

Upgrading eliminates this vulnerability. A possible mitigation has been published 3 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (8697), Exploit-DB (21114), Tenable (10823), SecurityFocus (BID 8697†) and OSVDB (6073†). The entry VDB-17770 is related to this item. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.0
VulDB Meta Temp Score: 3.6

VulDB Base Score: 4.0
VulDB Temp Score: 3.6
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: Partially
Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

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EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 10823
Nessus Name: OpenSSH < 3.0.2 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
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Timelineinfo

09/17/2001 🔍
09/20/2001 +3 days 🔍
09/20/2001 +0 days 🔍
09/20/2001 +0 days 🔍
09/20/2001 +0 days 🔍
12/03/2001 +73 days 🔍
12/10/2001 +7 days 🔍
09/24/2003 +653 days 🔍
04/09/2004 +197 days 🔍
10/22/2006 +926 days 🔍
07/09/2014 +2817 days 🔍
08/16/2024 +3691 days 🔍

Sourcesinfo

Vendor: openbsd.org

Advisory: archives.neohapsis.com
Researcher: Przemyslaw Frasunek
Status: Not defined

CVE: CVE-2001-1029 (🔍)
GCVE (CVE): GCVE-0-2001-1029
GCVE (VulDB): GCVE-100-17429
X-Force: 8697
SecurityFocus: 8697 - NullLogic Null HTTPd Remote Denial Of Service Vulnerability
OSVDB: 6073 - OpenSSH on FreeBSD libutil Arbitrary File Read
Vulnerability Center: 12954 - OpenSSH on FreeBSD 4.4 Allows Local Users To Read Arbitrary Files, Medium

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

Entryinfo

Created: 07/09/2014 13:20
Updated: 08/16/2024 12:15
Changes: 07/09/2014 13:20 (77), 07/10/2019 07:55 (2), 08/16/2024 12:15 (19)
Complete: 🔍
Cache ID: 216::103

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