Vulnerability · Published Sep 25, 2020 · Assigned by mitre
CVE-2020-24718
High 8.2
In plain English
A high-severity security flaw in the affected software. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 49% of all known vulnerabilities).
Severity (CVSS NVD)8.2High
Exploit odds (30 days)0.6%top 50.9% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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 products (as reported)
References
- https://github.com/illumos/illumos-gate/blob/84971882a96ac0fecd538b02208054a872ff8af3/usr/src/uts/i86pc/io/vmm/intel/vmcs.c#L246-L249 x_refsource_MISC
- https://security.FreeBSD.org/advisories/FreeBSD-SA-20:28.bhyve_vmcs.asc x_refsource_CONFIRM
- https://security.netapp.com/advisory/ntap-20201016-0002/ x_refsource_CONFIRM