CVE-2018-17160
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.35%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.0
- 10.0 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- EPSS
- 3.35% probability · 88th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- freebsd/freebsd
- Source
- secteam@freebsd.org
References
- http://www.securityfocus.com/bid/106210Third Party Advisory, VDB Entry
- https://security.freebsd.org/advisories/FreeBSD-SA-18:14.bhyve.ascMitigation, Patch, Vendor Advisory
- http://www.securityfocus.com/bid/106210Third Party Advisory, VDB Entry
- https://security.freebsd.org/advisories/FreeBSD-SA-18:14.bhyve.ascMitigation, Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.