CVE-2021-4147

Aliases:DEBIAN-CVE-2021-4147UBUNTU-CVE-2021-4147
Advisory lineage Upstream: 0 Downstream: 14
Modified
Published: 25 Mar 2022, 00:00
Last modified:03 Aug 2024, 17:16

Vulnerability Summary

Overall Risk (default)
medium
26/100
CVSS Score
6.5 MEDIUM
v3.1 (nvd)
EPSS Score
0.24% LOW
0% probability +0.16%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

25 Mar 2022, 00:00
Published
Vulnerability first disclosed
03 Aug 2024, 17:16
Last Modified
Vulnerability information updated

Description

A flaw was found in the libvirt libxl driver. A malicious guest could continuously reboot itself and cause libvirtd on the host to deadlock or crash, resulting in a denial of service condition.

CVSS Metrics

  • v3.1•MEDIUM•Score: 6.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
  • v2.0•MEDIUM•Score: 4.9AV:L/AC:L/Au:N/C:N/I:N/A:C

EPSS Trends

Current EPSS score: 0.24%• Percentile: 16%

Techniques & Countermeasures

  • CWE-667•Improper Locking

    The product does not properly acquire or release a lock on a resource, leading to unexpected resource state changes and behaviors.

Affected Systems

  • debian•libvirt

    < 7.0.0-3+deb11u3 | < 7.10.0-2 | < 7.10.0-2 | < 7.10.0-2

  • ubuntu•libvirt

    all | < 1.3.1-1ubuntu10.31+esm1 | < 4.0.0-1ubuntu8.21 | < 6.0.0-0ubuntu8.16

  • fedoraproject•fedora

    35

  • netapp•ontap_select_deploy_administration_utility

    na

  • redhat•libvirt

    < 2.33.0

References (9)