Vulnerability identifier: #VU61908

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: CVE-2022-23085

CWE-ID: CWE-190

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 escalate privileges on the system.

The vulnerability exists due to integer overflow within the nmreq_copyin() function in netmap. A local user can trigger integer overflow and execute arbitrary code with elevated privileges. The vulnerability can be used to escape jail environment.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

FreeBSD: 12.0 - 13.1

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External links
http://www.freebsd.org/security/advisories/FreeBSD-SA-22:04.netmap.asc
http://www.zerodayinitiative.com/advisories/ZDI-22-1292/

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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.