Vulnerability identifier: #VU77768

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-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 escalate privileges on the system.

The vulnerability exists due to a logic error in pam_ksu(8) implementation on systems that use the module to authenticate an unprivileged user calling the su(1) command. A local user can authenticate as an arbitrary user and compromise the system.

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-SA2023-005.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.