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CVE-2020-24718

HIGH
8.2
CVSS Score
Published: September 25, 2020 at 03:49 AM UTC
Updated: June 17, 2026 at 03:06 AM UTC
4 products affected across 4 vendorsFreeBSDClustered Data ONTAPOmnios

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Severity
HIGH8.2
Exploit prediction
EPSS 0.6%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://github.com/illumos/illumos-gate/blob/84971882a96ac0fecd538b02208054a872ff8af3/usr/src/uts/i86pc/io/vmm/intel/vmcs.c#L246-L249
x_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://security.FreeBSD.org/advisories/FreeBSD-SA-20:28.bhyve_vmcs.asc
x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20201016-0002/

CVSS

8.2HIGH[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-862

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