CVE-2020-14339

CVE Details

Release Date:	2020-12-03
Impact:	None	What is this?

Description

A flaw was found in libvirt, where it leaked a file descriptor for /dev/mapper/control into the QEMU process. This file descriptor allows for privileged operations to happen against the device-mapper on the host. This flaw allows a malicious guest user or process to perform operations outside of their standard permissions, potentially causing serious damage to the host operating system. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

See more information about CVE-2020-14339 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 metrics

Base Score:	8.8
Vector String:	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Version:	3.0
Attack Vector:	Local
Attack Complexity:	Low
Privileges Required:	Low
User Interaction:	None
Scope:	Changed
Confidentiality Impact:	High
Integrity Impact:	High
Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 8 (hivex)	ELSA-2020-4676	2020-11-10
Oracle Linux version 8 (libguestfs)	ELSA-2020-4676	2020-11-10
Oracle Linux version 8 (libguestfs-winsupport)	ELSA-2020-4676	2020-11-10
Oracle Linux version 8 (libiscsi)	ELSA-2020-4676	2020-11-10
Oracle Linux version 8 (libnbd)	ELSA-2020-4676	2020-11-10
Oracle Linux version 8 (libvirt)	ELSA-2020-4676	2020-11-10
Oracle Linux version 8 (libvirt-dbus)	ELSA-2020-4676	2020-11-10
Oracle Linux version 8 (libvirt-python)	ELSA-2020-4676	2020-11-10
Oracle Linux version 8 (nbdkit)	ELSA-2020-4676	2020-11-10
Oracle Linux version 8 (netcf)	ELSA-2020-4676	2020-11-10
Oracle Linux version 8 (perl-Sys-Virt)	ELSA-2020-4676	2020-11-10
Oracle Linux version 8 (qemu-kvm)	ELSA-2020-4676	2020-11-10
Oracle Linux version 8 (seabios)	ELSA-2020-4676	2020-11-10
Oracle Linux version 8 (sgabios)	ELSA-2020-4676	2020-11-10
Oracle Linux version 8 (supermin)	ELSA-2020-4676	2020-11-10