CVE-2018-17160

Severity: critical (CVSS 10.0 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-12-04 · updated 2026-06-17
Weakness: CWE-787

Description

In FreeBSD before 11.2-STABLE(r341486) and 11.2-RELEASE-p6, insufficient bounds checking in one of the device models provided by bhyve can permit a guest operating system to overwrite memory in the bhyve host possibly permitting arbitrary code execution. A guest OS using a firmware image can cause the bhyve process to crash, or possibly execute arbitrary code on the host as root.

Affected products

FreeBSD: before 11.2; 11.2-p5 — fixed in 11.2

How to fix

Upgrade to a fixed version: FreeBSD 11.2. Check the vendor advisory for mitigations.

References

http://www.securityfocus.com/bid/106210
https://security.freebsd.org/advisories/FreeBSD-SA-18:14.bhyve.asc
http://www.securityfocus.com/bid/106210
https://security.freebsd.org/advisories/FreeBSD-SA-18:14.bhyve.asc

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