NetBSD up to 2.1 Kernfs lseek information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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3.8$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in NetBSD up to 2.1. Affected by this issue is the function lseek of the component Kernfs. Performing a manipulation results in information disclosure. This vulnerability is cataloged as CVE-2006-0145. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in NetBSD up to 2.1 (Operating System). It has been classified as problematic. This affects the function lseek of the component Kernfs. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. The summary by CVE is:

The kernfs_xread function in kernfs in NetBSD 1.6 through 2.1, and OpenBSD 3.8, does not properly validate file offsets against negative 32-bit values that occur as a result of truncation, which allows local users to read arbitrary kernel memory and gain privileges via the lseek system call.

The weakness was shared 01/10/2006 by Ejovi Nuwere and Christos Zoulas with SecurityLab (Website). It is possible to read the advisory at ftp.netbsd.org. This vulnerability is uniquely identified as CVE-2006-0145 since 01/09/2006. Access to the local network is required for this attack to succeed. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at ftp.netbsd.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at X-Force (24035), SecurityFocus (BID 16173†), OSVDB (22293†) and Secunia (SA18712†). The entry VDB-2030 is related to this item. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 3.8

VulDB Base Score: 4.3
VulDB Temp Score: 3.8
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: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Unproven

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: 🔍
Patch: ftp.netbsd.org

Timelineinfo

01/09/2006 🔍
01/09/2006 +0 days 🔍
01/09/2006 +0 days 🔍
01/10/2006 +1 days 🔍
01/10/2006 +0 days 🔍
01/11/2006 +0 days 🔍
02/03/2006 +23 days 🔍
04/20/2018 +4459 days 🔍

Sourcesinfo

Advisory: ftp.netbsd.org
Researcher: Ejovi Nuwere, Christos Zoulas
Organization: SecurityLab
Status: Confirmed

CVE: CVE-2006-0145 (🔍)
GCVE (CVE): GCVE-0-2006-0145
GCVE (VulDB): GCVE-100-1959
X-Force: 24035 - NetBSD kernfs kernfs_xread() kernel memory disclosure, Medium Risk
SecurityFocus: 16173 - Multiple Vendor KernFS LSEEK Local Kernel Memory Disclosure Vulnerability
Secunia: 18712 - OpenBSD Kernfs Kernel Memory Disclosure Vulnerability, Less Critical
OSVDB: 22293 - Multiple BSD kernfs lseek(2) Function Arbitrary Memory Disclosure

See also: 🔍

Entryinfo

Created: 01/11/2006 11:44
Updated: 04/20/2018 09:40
Changes: 01/11/2006 11:44 (66), 04/20/2018 09:40 (7)
Complete: 🔍
Cache ID: 216:BD2:103

Be aware that VulDB is the high quality source for vulnerability data.

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