CVE-2021-3667
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- CVE-2021-3667
CVE Details
| Release Date: | 2022-03-02 |
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.
See more information about CVE-2021-3667 from MITRE CVE dictionary and NIST NVD
CVSS v3.0 metrics
NOTE: The following CVSS v3.0 metrics and score provided are preliminary and subject to review.
| Base Score: | 6.5 | Base Metrics: | AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| Access Vector: | Network | Attack Complexity: | Low |
| Privileges Required: | Low | User Interaction: | None |
| Scope: | Unchanged | Confidentiality Impact: | None |
| Integrity Impact: | None | Availability Impact: | High |
Errata information
| Platform | Errata | Release Date |
| Oracle Linux version 8 (hivex) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (libguestfs) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (libguestfs-winsupport) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (libiscsi) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (libnbd) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (libvirt) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (libvirt-dbus) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (libvirt-python) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (nbdkit) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (netcf) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (perl-Sys-Virt) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (qemu-kvm) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (seabios) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (sgabios) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (supermin) | ELSA-2021-4191 | 2021-11-16 |
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