#VU61914 Heap-based buffer overflow in FreeBSD - CVE-2022-23088

Vulnerability identifier: #VU61914

Vulnerability risk: Medium

CVSSv4.0: 5.9 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-23088

CWE-ID: CWE-122

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
FreeBSD
Operating systems & Components / Operating system

Vendor: FreeBSD Foundation

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error within the 802.11 beacon handling routine in FreeBSD Wi-Fi client. A remote attacker with control over the Wi-Fi hotspot can send specially beacon crafted frames to the FreeBSD Wi-Fi client in scanning mode, trigger a heap-based buffer overflow and execute arbitrary code on the system.

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-22:07.wifi_meshid.asc
https://www.zerodayinitiative.com/advisories/ZDI-22-806/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.