CVE-2023-3494

CVSS 3.1 Score 5.4 of 10 (medium)

Details

Published Aug 1, 2023
Updated: Aug 31, 2023
CWE ID 79

Summary

CVE-2023-3494 is a vulnerability affecting the fwctl driver in certain environments. The issue lies in the state machine implementation, which can cause a buffer overflow when a guest VM attempts to copy a string into a bhyve process' memory. Malicious software running within the guest VM can exploit this flaw to execute code in the bhyve userspace process, which usually operates with root privileges. However, the Capsicum sandbox mitigates this risk by limiting the capabilities of the bhyve process.

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