Vulnerability identifier: #VU87316

Vulnerability risk: Low

CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-451

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 perform spoofing attack.

The vulnerability exists due to incorrect processing of user-supplied data within the utmp_update(8) command when handling hostnames. A local user can inject specially crafted data into the utmpx(5) database and spoof content of log files or display arbitrary output for tools, which display hostnames from utmpx(5) databases such us w(1) or who(1).

Mitigation
Install updates from vendor's website.

Vulnerable software versions

NetBSD: 8.0 - 10

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External links
http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2024-001.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.