high
8.2
CWE
862
Advisory Published
Updated

CVE-2020-24718

First published: Fri Sep 25 2020(Updated: )

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.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
FreeBSD FreeBSD<=11.2
FreeBSD FreeBSD=11.3
FreeBSD FreeBSD=11.3-p1
FreeBSD FreeBSD=11.3-p10
FreeBSD FreeBSD=11.3-p11
FreeBSD FreeBSD=11.3-p12
FreeBSD FreeBSD=11.3-p13
FreeBSD FreeBSD=11.3-p2
FreeBSD FreeBSD=11.3-p3
FreeBSD FreeBSD=11.3-p4
FreeBSD FreeBSD=11.3-p5
FreeBSD FreeBSD=11.3-p6
FreeBSD FreeBSD=11.3-p7
FreeBSD FreeBSD=11.3-p8
FreeBSD FreeBSD=11.3-p9
FreeBSD FreeBSD=11.3-rc3
FreeBSD FreeBSD=11.4
FreeBSD FreeBSD=11.4-beta1
FreeBSD FreeBSD=11.4-p1
FreeBSD FreeBSD=11.4-p2
FreeBSD FreeBSD=11.4-p3
FreeBSD FreeBSD=11.4-rc1
FreeBSD FreeBSD=11.4-rc2
FreeBSD FreeBSD=12.0
FreeBSD FreeBSD=12.0-p1
FreeBSD FreeBSD=12.0-p10
FreeBSD FreeBSD=12.0-p11
FreeBSD FreeBSD=12.0-p12
FreeBSD FreeBSD=12.0-p2
FreeBSD FreeBSD=12.0-p3
FreeBSD FreeBSD=12.0-p4
FreeBSD FreeBSD=12.0-p5
FreeBSD FreeBSD=12.0-p6
FreeBSD FreeBSD=12.0-p7
FreeBSD FreeBSD=12.0-p8
FreeBSD FreeBSD=12.0-p9
FreeBSD FreeBSD=12.1
FreeBSD FreeBSD=12.1-p1
FreeBSD FreeBSD=12.1-p2
FreeBSD FreeBSD=12.1-p3
FreeBSD FreeBSD=12.1-p4
FreeBSD FreeBSD=12.1-p5
FreeBSD FreeBSD=12.1-p6
FreeBSD FreeBSD=12.1-p7
FreeBSD FreeBSD=12.1-p8
FreeBSD FreeBSD=12.1-p9
Omniosce Omnios<=r151034
Openindiana Openindiana<=hipster_2020.04
NetApp Clustered Data ONTAP

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Reference Links

Frequently Asked Questions

  • What is CVE-2020-24718?

    CVE-2020-24718 is a vulnerability in bhyve, as used in FreeBSD through 12.1 and illumos, that allows a root user in a container on an Intel system to gain privileges by modifying VMCS_HO.

  • How does CVE-2020-24718 impact FreeBSD and illumos?

    CVE-2020-24718 impacts FreeBSD through 12.1 and illumos (e.g., OmniOS CE through r151034 and OpenIndiana through Hipster 2020.04).

  • What is the severity of CVE-2020-24718?

    CVE-2020-24718 has a severity rating of 8.2 (high).

  • How can an attacker exploit CVE-2020-24718?

    An attacker can exploit CVE-2020-24718 by being a root user in a container on an Intel system and modifying VMCS_HO to gain privileges.

  • Where can I find more information about CVE-2020-24718?

    You can find more information about CVE-2020-24718 in the references provided: [GitHub](https://github.com/illumos/illumos-gate/blob/84971882a96ac0fecd538b02208054a872ff8af3/usr/src/uts/i86pc/io/vmm/intel/vmcs.c#L246-L249), [FreeBSD Security Advisory](https://security.FreeBSD.org/advisories/FreeBSD-SA-20:28.bhyve_vmcs.asc), and [NetApp Security Advisory](https://security.netapp.com/advisory/ntap-20201016-0002/).

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