Vulnerability identifier: #VU67909

Vulnerability risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-362

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 escalate privileges on the system.

The vulnerability exists due to a race condition in mail.local(8) (/usr/libexec/mail.local), caused by an insufficient fix for #VU196 (CVE-2016-6253). A local user can exploit the race and escalate privileges on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

NetBSD: 8.0 - 9.2

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External links
http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2022-003.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.