OpenBSD FFS/EXT2FS Filesystem nlink denial of service

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.
5.9$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in OpenBSD. Affected is an unknown function of the component FFS/EXT2FS Filesystem. Executing a manipulation of the argument nlink can lead to denial of service. This vulnerability is registered as CVE-1999-0483. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in OpenBSD (Operating System) (unknown version) and classified as problematic. This vulnerability affects an unknown code block of the component FFS/EXT2FS Filesystem. The manipulation of the argument nlink with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. CVE summarizes:

OpenBSD crash using nlink value in FFS and EXT2FS filesystems.

The weakness was published 02/25/1999 (Website). The advisory is available at osvdb.org. This vulnerability was named CVE-1999-0483. 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 are known, but there is no available exploit.

After immediately, there has been an exploit disclosed.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (1827), OSVDB (6129†) and Vulnerability Center (SBV-622†). Similar entry is available at VDB-14526. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 5.9

VulDB Base Score: 6.2
VulDB Temp Score: 5.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Timelineinfo

02/25/1999 🔍
02/25/1999 +0 days 🔍
02/25/1999 +0 days 🔍
02/25/1999 +0 days 🔍
12/31/2002 +1405 days 🔍
04/09/2004 +464 days 🔍
06/20/2014 +3724 days 🔍
04/18/2026 +4320 days 🔍

Sourcesinfo

Advisory: osvdb.org⛔
Status: Confirmed

CVE: CVE-1999-0483 (🔍)
GCVE (CVE): GCVE-0-1999-0483
GCVE (VulDB): GCVE-100-14530
X-Force: 1827
OSVDB: 6129 - OpenBSD FFS and EXT2FS Filesystems nlink DoS
Vulnerability Center: 622 - OpenBSD Crash Using Nlink Value in FFS and EXT2FS Filesystems, Medium

See also: 🔍

Entryinfo

Created: 06/20/2014 17:15
Updated: 04/18/2026 14:16
Changes: 06/20/2014 17:15 (56), 05/07/2019 22:45 (2), 04/18/2026 14:16 (18)
Complete: 🔍
Cache ID: 216::103

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

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Interested in the pricing of exploits?

See the underground prices here!