Rapid7 Vulnerability & Exploit Database

Alpine Linux: CVE-2020-14339: libvirt leak of /dev/mapper/control into QEMU guests

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Alpine Linux: CVE-2020-14339: libvirt leak of /dev/mapper/control into QEMU guests

Severity
7
CVSS
(AV:L/AC:L/Au:N/C:C/I:C/A:C)
Published
08/17/2020
Created
09/24/2020
Added
09/23/2020
Modified
12/10/2020

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.

Solution(s)

  • alpine-linux-upgrade-libvirt

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