FreeBSD 802.11 Network Subsystem Heap-based Buffer Overflow Remote Code Execution Vulnerability [CVE-2022-23088]

CVE number = CVE-2022-23088

This vulnerability in FreeBSD allows network-adjacent attackers to execute arbitrary code on affected installations of FreeBSD Kernel.

Authentication is not required to exploit this vulnerability.

The specific flaw exists within the handling of 802.11 Wi-Fi beacon frames. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the kernel.

No workaround is available. Systems not using Wi-Fi are not affected.

FreeBSD has issued an update to correct this vulnerability.

More details can be found at:
https://www.freebsd.org/security/advisories/FreeBSD-SA-22:07.wifi_meshid.asc

Jason Davies

UK based technology professional, with an interest in computer security and telecoms.

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