CVE-2020-24718 Privilege escalation in n/a

High 8.2 Published 25 Sep 2020 Updated 4 Aug 2024

A root user in a container can escalate privileges by modifying VMCS_HOST_RIP due to improper restriction of VMCS and VMCB operations in bhyve.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2020-24718?

CVE-2020-24718 is a high-severity vulnerability in Freebsd Freebsd, published on 25 Sep 2020. It can only be exploited from the same machine or local network, with no action from the victim.

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.

Weakness: CWE-862

Which versions are affected by CVE-2020-24718?

It affects 4 products.

Products include Freebsd Freebsd, Netapp Clustered Data Ontap, Omniosce Omnios, Openindiana Openindiana.

How do I fix CVE-2020-24718?

No fix has been published for CVE-2020-24718 yet. Limit exposure of the affected software until one is available.

Is CVE-2020-24718 being exploited?

There is no known exploitation of CVE-2020-24718 in the wild and no public exploit code.

All Freebsd Freebsd vulnerabilities

Sources

Also known as GHSA-g73j-h828-gg82.