VDB-16207 · CVE-2000-0996 · XFDB 5636

OpenBSD su format string

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.0	$0-$5k	0.00

Summaryinfo

A vulnerability identified as problematic has been detected in OpenBSD. This issue affects some unknown processing of the file su. This manipulation causes format string. This vulnerability is tracked as CVE-2000-0996. No exploit exists. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability was found in OpenBSD (Operating System) (affected version not known). It has been declared as critical. Affected by this vulnerability is some unknown functionality of the file su. 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. The summary by CVE is:

Format string vulnerability in OpenBSD su program (and possibly other BSD-based operating systems) allows local attackers to gain root privileges via a malformed shell.

The weakness was disclosed 10/04/2000 as not defined patch (Website). It is possible to read the advisory at ftp.openbsd.org. This vulnerability is known as CVE-2000-0996. The exploitation appears to be easy. Attacking locally is a requirement. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at ftp.openbsd.org.

The vulnerability is also documented in the databases at X-Force (5636) and OSVDB (6124†). The entries VDB-16020 and VDB-16206 are pretty similar. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Operating System

Name

OpenBSD

License

open-source

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.4
VulDB Meta Temp Score: 8.0

VulDB Base Score: 8.4
VulDB Temp Score: 8.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: ftp.openbsd.org

Timelineinfo

10/04/2000 🔍
12/19/2000 +76 days 🔍
04/09/2004 +1206 days 🔍
07/02/2014 +3736 days 🔍
04/06/2019 +1739 days 🔍

Sourcesinfo

Advisory: ftp.openbsd.org
Status: Not defined

CVE: CVE-2000-0996 (🔍)
GCVE (CVE): GCVE-0-2000-0996
GCVE (VulDB): GCVE-100-16207
X-Force: 5636 - BSD systems su format string
OSVDB: 6124 - OpenBSD su Format String

See also: 🔍

Entryinfo

Created: 07/02/2014 11:29
Updated: 04/06/2019 15:16
Changes: 07/02/2014 11:29 (42), 04/06/2019 15:16 (12)
Complete: 🔍
Cache ID: 216:558:103