CVE-2020-14339

Aliases:ALPINE-CVE-2020-14339DEBIAN-CVE-2020-14339
Advisory lineage Upstream: 0 Downstream: 9
Modified
Published: 03 Dec 2020, 00:00
Last modified:04 Aug 2024, 12:39

Vulnerability Summary

Overall Risk (default)
medium
35/100
CVSS Score
8.8 HIGH
v3.1 (nvd)
EPSS Score
0.42% LOW
0% probability +0.34%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

03 Dec 2020, 00:00
Published
Vulnerability first disclosed
04 Aug 2024, 12:39
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•HIGH•Score: 8.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
  • v2.0•HIGH•Score: 7.2AV:L/AC:L/Au:N/C:C/I:C/A:C

EPSS Trends

Current EPSS score: 0.42%• Percentile: 36%

Techniques & Countermeasures

  • CWE-772•Missing Release of Resource after Effective Lifetime

    The product does not release a resource after its effective lifetime has ended, i.e., after the resource is no longer needed.

Affected Systems

  • alpine•libvirt

    ≥ 6.2.0, < 6.6.0-r0

  • debian•libvirt

    < 6.6.0-1 | < 6.6.0-1 | < 6.6.0-1 | < 6.6.0-1

  • redhat•enterprise_linux

    8.0

  • redhat•libvirt

    ≥ 6.2.0, < 6.7.0

References (5)