#VU66474 Permissions, Privileges, and Access Controls in FreeBSD - CVE-2022-23091

Vulnerability identifier: #VU66474

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-23091

CWE-ID: CWE-264

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
FreeBSD
Operating systems & Components / Operating system

Vendor: FreeBSD Foundation

Description

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

The vulnerability exists due to an error in virtual mapping implementation. An local unprivileged process can maintain a mapping of a page after it is freed, allowing that process to read private data belonging to other processes or the kernel.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

FreeBSD: 12.0 - 13.1

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External links
https://www.freebsd.org/security/advisories/FreeBSD-SA-22:11.vm.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.