NetBSD/OpenBSD/Solaris Call Gate Creation i386_set_ldt USER_LD privileges management

CVSS Meta Temp Score
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CTI Interest Score
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8.0$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in NetBSD, OpenBSD and Solaris. Affected by this issue is the function i386_set_ldt of the component Call Gate Creation Handler. This manipulation of the argument USER_LD causes privileges management. This vulnerability appears as CVE-2001-0268. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in NetBSD, OpenBSD and Solaris (Operating System) (affected version unknown). Affected by this vulnerability is the function i386_set_ldt of the component Call Gate Creation Handler. The manipulation of the argument USER_LD with an unknown input 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. The summary by CVE is:

The i386_set_ldt system call in NetBSD 1.5 and earlier, and OpenBSD 2.8 and earlier, when the USER_LDT kernel option is enabled, does not validate a call gate target, which allows local users to gain root privileges by creating a segment call gate in the Local Descriptor Table (LDT) with a target that specifies an arbitrary kernel address.

The weakness was presented 02/16/2001 by Bill Sommerfeld (FIRST) as confirmed advisory (CERT.org). The advisory is shared at kb.cert.org. This vulnerability is known as CVE-2001-0268. The exploitation appears to be easy. An attack has to be approached locally. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (6222), SecurityFocus (BID 2739†) and OSVDB (6141†). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Name

License

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

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

NVD Base Score: 🔍

Exploitinginfo

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

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

02/16/2001 🔍
02/16/2001 +0 days 🔍
05/03/2001 +76 days 🔍
04/09/2004 +1071 days 🔍
07/03/2014 +3737 days 🔍
12/14/2024 +3817 days 🔍

Sourcesinfo

Advisory: kb.cert.org
Researcher: Bill Sommerfeld (FIRST)
Status: Confirmed

CVE: CVE-2001-0268 (🔍)
GCVE (CVE): GCVE-0-2001-0268
GCVE (VulDB): GCVE-100-16633
CERT: 🔍
X-Force: 6222 - NetBSD and OpenBSD USER_LDT validation
SecurityFocus: 2739 - Multiple Vendor Call Gate Creation Input Validation Vulnerability
OSVDB: 6141 - Multiple BSD USER_LDT Kernel Option Memory Access

Entryinfo

Created: 07/03/2014 17:28
Updated: 12/14/2024 22:18
Changes: 07/03/2014 17:28 (60), 04/07/2019 18:29 (1), 12/14/2024 22:18 (17)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

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