CVE-2021-3667

Aliases:DEBIAN-CVE-2021-3667
Advisory lineage Upstream: 0 Downstream: 15
Analyzed
Published: 02 Mar 2022, 00:00
Last modified:13 Feb 2025, 16:28

Vulnerability Summary

Overall Risk (default)
medium
26/100
CVSS Score
6.5 MEDIUM
v3.1 (nvd)
EPSS Score
1.37% LOW
1% probability +0.93%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

02 Mar 2022, 00:00
Published
Vulnerability first disclosed
13 Feb 2025, 16:28
Last Modified
Vulnerability information updated

Description

An improper locking issue was found in the virStoragePoolLookupByTargetPath API of libvirt. It occurs in the storagePoolLookupByTargetPath function where a locked virStoragePoolObj object is not properly released on ACL permission failure. Clients connecting to the read-write socket with limited ACL permissions could use this flaw to acquire the lock and prevent other users from accessing storage pool/volume APIs, resulting in a denial of service condition. The highest threat from this vulnerability is to system availability.

CVSS Metrics

  • v3.1•MEDIUM•Score: 6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  • v2.0•LOW•Score: 3.5AV:N/AC:M/Au:S/C:N/I:N/A:P

EPSS Trends

Current EPSS score: 1.37%• Percentile: 71%

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 | < 7.6.0-1 | < 7.6.0-1 | < 7.6.0-1

  • debian•debian_linux

    10.0

  • netapp•ontap_select_deploy_administration_utility

    na

  • redhat•enterprise_linux

    8.0

  • redhat•libvirt

    ≥ 4.1.0, ≤ 7.5.0

References (7)