FreeBSD/NetBSD/OpenBSD libutil pw_error format string

CVSS Meta Temp Score
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CTI Interest Score
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7.6$0-$5k0.00

Summaryinfo

A vulnerability was found in FreeBSD, NetBSD and OpenBSD. It has been declared as problematic. Affected by this issue is the function pw_error of the file libutil. Executing a manipulation can lead to format string. The identification of this vulnerability is CVE-2000-0993. Furthermore, there is an exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in FreeBSD, NetBSD and OpenBSD (Operating System) (version now known) and classified as critical. This vulnerability affects the function pw_error of the file libutil. The manipulation with an unknown input leads to a format string vulnerability. The CWE definition for the vulnerability is CWE-134. The product uses a function that accepts a format string as an argument, but the format string originates from an external source. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Format string vulnerability in pw_error function in BSD libutil library allows local users to gain root privileges via a malformed password in commands such as chpass or passwd.

The bug was discovered 10/04/2000. The weakness was shared 10/04/2000 by FIRST with OpenBSD Team (Website). The advisory is shared for download at openbsd.org. This vulnerability was named CVE-2000-0993. The exploitation appears to be easy. The attack needs to be approached locally. No form of authentication is required for a successful exploitation. Technical details and also a public exploit are known.

A public exploit has been developed by caddis and been published 4 months after the advisory. It is possible to download the exploit at securiteam.com. It is declared as proof-of-concept.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (5339), Exploit-DB (243), SecurityFocus (BID 1744†), OSVDB (1587†) and Vulnerability Center (SBV-20697†). Once again VulDB remains the best source for vulnerability data.

Productinfo

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License

Website

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

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Format string
CWE: CWE-134 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Timelineinfo

10/04/2000 🔍
10/04/2000 +0 days 🔍
10/04/2000 +0 days 🔍
10/04/2000 +0 days 🔍
12/19/2000 +76 days 🔍
01/12/2001 +24 days 🔍
01/12/2001 +0 days 🔍
02/21/2003 +770 days 🔍
02/02/2009 +2172 days 🔍
07/02/2014 +1976 days 🔍
06/23/2024 +3644 days 🔍

Sourcesinfo

Product: freebsd.org

Advisory: openbsd.org
Researcher: FIRST
Organization: OpenBSD Team
Status: Confirmed

CVE: CVE-2000-0993 (🔍)
GCVE (CVE): GCVE-0-2000-0993
GCVE (VulDB): GCVE-100-16204
X-Force: 5339 - BSD systems libutil format string
SecurityFocus: 1744 - Multiple Vendor BSD libutil pw_error() Format String Vulnerability
OSVDB: 1587 - Multiple BSD libutil pw_error() Format String Privilege Escalation
Vulnerability Center: 20697 - Multiple BSD Systems pw_error Function Local Root Privileges via a Malformed Password, High

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

Entryinfo

Created: 07/02/2014 11:24
Updated: 06/23/2024 03:45
Changes: 07/02/2014 11:24 (73), 08/26/2019 12:00 (1), 06/23/2024 03:45 (16)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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