CVE-2020-24718
HIGHFreeBSD through 12.1 - Missing Authorization in bhyve VMCS/VMCB Operations
Title source: llmDescription
bhyve, as used in FreeBSD through 12.1 and illumos (e.g., OmniOS CE through r151034 and OpenIndiana through Hipster 2020.04), does not properly restrict VMCS and VMCB read/write operations, as demonstrated by a root user in a container on an Intel system, who can gain privileges by modifying VMCS_HOST_RIP.
References (3)
Core 3
Core References
Exploit, Third Party Advisory x_refsource_misc
https://github.com/illumos/illumos-gate/blob/84971882a96ac0fecd538b02208054a872ff8af3/usr/src/uts/i86pc/io/vmm/intel/vmcs.c#L246-L249
Vendor Advisory x_refsource_confirm
https://security.FreeBSD.org/advisories/FreeBSD-SA-20:28.bhyve_vmcs.asc
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20201016-0002/
Scores
CVSS v3
8.2
EPSS
0.0010
EPSS Percentile
27.4%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Details
CWE
CWE-862
Status
published
Products (8)
freebsd/freebsd
11.3 (15 CPE variants)
freebsd/freebsd
11.4 (7 CPE variants)
freebsd/freebsd
12.0 (13 CPE variants)
freebsd/freebsd
12.1 (10 CPE variants)
freebsd/freebsd
< 11.2
netapp/clustered_data_ontap
omniosce/omnios
< r151034
openindiana/openindiana
< hipster_2020.04
Published
Sep 25, 2020
Tracked Since
Feb 18, 2026