CVE-2021-3631
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- CVE-2021-3631
CVE Details
| Release Date: | 2022-03-02 |
Description
A flaw was found in libvirt while it generates SELinux MCS category pairs for VMs' dynamic labels. This flaw allows one exploited guest to access files labeled for another guest, resulting in the breaking out of sVirt confinement. The highest threat from this vulnerability is to confidentiality and integrity.
See more information about CVE-2021-3631 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: | 6.3 | Base Metrics: | AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N |
| Access Vector: | Local network | Attack Complexity: | High |
| Privileges Required: | Low | User Interaction: | None |
| Scope: | Unchanged | Confidentiality Impact: | High |
| Integrity Impact: | High | Availability Impact: | None |
Errata information
| Platform | Errata | Release Date |
| Oracle Linux version 7 (libvirt) | ELSA-2022-10062 | 2022-12-06 |
| Oracle Linux version 7 (libvirt-python) | ELSA-2022-10062 | 2022-12-06 |
| Oracle Linux version 8 (hivex) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (hivex) | ELSA-2022-10093 | 2022-12-17 |
| Oracle Linux version 8 (hivex) | ELSA-2023-12108 | 2023-02-08 |
| Oracle Linux version 8 (libguestfs) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (libguestfs) | ELSA-2022-10093 | 2022-12-17 |
| Oracle Linux version 8 (libguestfs) | ELSA-2023-12108 | 2023-02-08 |
| Oracle Linux version 8 (libguestfs-winsupport) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (libguestfs-winsupport) | ELSA-2023-12108 | 2023-02-08 |
| Oracle Linux version 8 (libiscsi) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (libiscsi) | ELSA-2023-12108 | 2023-02-08 |
| Oracle Linux version 8 (libnbd) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (libnbd) | ELSA-2023-12108 | 2023-02-08 |
| Oracle Linux version 8 (libvirt) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (libvirt) | ELSA-2023-12108 | 2023-02-08 |
| Oracle Linux version 8 (libvirt-dbus) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (libvirt-dbus) | ELSA-2023-12108 | 2023-02-08 |
| Oracle Linux version 8 (libvirt-python) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (libvirt-python) | ELSA-2023-12108 | 2023-02-08 |
| Oracle Linux version 8 (nbdkit) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (nbdkit) | ELSA-2023-12108 | 2023-02-08 |
| Oracle Linux version 8 (netcf) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (netcf) | ELSA-2023-12108 | 2023-02-08 |
| Oracle Linux version 8 (perl-Sys-Virt) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (perl-Sys-Virt) | ELSA-2023-12108 | 2023-02-08 |
| Oracle Linux version 8 (qemu-kvm) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (qemu-kvm) | ELSA-2023-12108 | 2023-02-08 |
| Oracle Linux version 8 (seabios) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (seabios) | ELSA-2023-12108 | 2023-02-08 |
| Oracle Linux version 8 (sgabios) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (sgabios) | ELSA-2023-12108 | 2023-02-08 |
| Oracle Linux version 8 (supermin) | ELSA-2021-4191 | 2021-11-16 |
| Oracle Linux version 8 (supermin) | ELSA-2023-12108 | 2023-02-08 |
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