#VU67908 Permissions, Privileges, and Access Controls in NetBSD

Vulnerability identifier: #VU67908

Vulnerability risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: N/A

CWE-ID: CWE-264

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
NetBSD
Operating systems & Components / Operating system

Vendor: NetBSD Foundation, Inc

Description

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to missing permission checks, which allows to reuse open descriptors, exposed in the procfs(5) [pid]/fd/ directory. A local user can bypass permission checks and read data from opened descriptor.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

NetBSD: 8.0 - 9.2

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External links
https://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2022-004.txt.asc

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.