CVE-2020-24718

Public Exploit

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.

Category

8.2
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.10%
Vendor Advisory FreeBSD.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/illumos/illumos-gate/blob/84971882a96ac0fecd538b02208054a872ff8af3/usr/src/uts/i86pc/io/vmm/intel/vmcs.c#L246-L249 third party advisory exploit
https://security.FreeBSD.org/advisories/FreeBSD-SA-20:28.bhyve_vmcs.asc vendor advisory
https://security.netapp.com/advisory/ntap-20201016-0002/ third party advisory

Frequently Asked Questions

What is the severity of CVE-2020-24718?
CVE-2020-24718 has been scored as a high severity vulnerability.
How to fix CVE-2020-24718?
To fix CVE-2020-24718, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-24718 being actively exploited in the wild?
It is possible that CVE-2020-24718 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.