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THREATINT
PUBLISHED

CVE-2024-32668

bhyve(8) privileged guest escape via USB controller



Description

An insufficient boundary validation in the USB code could lead to an out-of-bounds write on the heap, with data controlled by the caller. A malicious, privileged software running in a guest VM can exploit the vulnerability to achieve code execution on the host in the bhyve userspace process, which typically runs as root. Note that bhyve runs in a Capsicum sandbox, so malicious code is constrained by the capabilities available to the bhyve process.

Reserved 2024-08-27 | Published 2024-09-05 | Updated 2024-09-20 | Assigner freebsd

Problem types

CWE-193: Off-by-one Error

CWE-787 Out-of-bounds Write

Product status

Default status
unknown

14.1-RELEASE before p4
affected

14.0-RELEASE before p10
affected

13.3-RELEASE before p6
affected

Credits

Synacktiv finder

The FreeBSD Foundation sponsor

The Alpha-Omega Project sponsor

References

security.freebsd.org/advisories/FreeBSD-SA-24:12.bhyve.asc vendor-advisory

cve.org (CVE-2024-32668)

nvd.nist.gov (CVE-2024-32668)

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