CVE-2021-3631
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- CVE-2021-3631
CVE Details
| Release Date: | 2022-03-02 | |
| Impact: | None | What is this? |
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
NOTE: The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 metrics
| Base Score: | 6.3 |
| Vector String: | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N |
| Version: | 3.0 |
| Attack Vector: | Local |
| 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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