CVE-2020-14339

libvirt: leak of /dev/mapper/control into QEMU guests

Severity Score

8.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

Se encontró un fallo en libvirt, donde filtró un descriptor de archivo para "/dev/mapper/control" en el proceso QEMU. Este descriptor de archivo permite que operaciones privilegiadas sean realizadas contra el mapeador de dispositivos en el host. este fallo permite a un usuario o proceso invitado malicioso llevar a cabo operaciones fuera de sus permisos estándar, lo que podría causar daños graves al sistema operativo del host. La mayor amenaza de esta vulnerabilidad es la confidencialidad, la integridad y la disponibilidad del sistema

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-06-17 CVE Reserved
2020-09-01 CVE Published
2023-03-08 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-772: Missing Release of Resource after Effective Lifetime

CAPEC

References (4)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://bugzilla.redhat.com/show_bug.cgi?id=1860069	2020-11-04

URL	Date	SRC
https://security.gentoo.org/glsa/202101-22	2022-11-07
https://security.gentoo.org/glsa/202210-06	2022-11-07
https://access.redhat.com/security/cve/CVE-2020-14339	2020-11-04

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Redhat Search vendor "Redhat"		Libvirt Search vendor "Redhat" for product "Libvirt"				>= 6.2.0 < 6.7.0 Search vendor "Redhat" for product "Libvirt" and version " >= 6.2.0 < 6.7.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux"				8.0 Search vendor "Redhat" for product "Enterprise Linux" and version "8.0"		advanced_virtualization		Affected