CVE-2020-25637
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- CVE-2020-25637
CVE Details
| Release Date: | 2020-10-06 |
Description
A double free memory issue was found to occur in the libvirt API, in versions before 6.8.0, responsible for requesting information about network interfaces of a running QEMU domain. This flaw affects the polkit access control driver. Specifically, clients connecting to the read-write socket with limited ACL permissions could use this flaw to crash the libvirt daemon, resulting in a denial of service, or potentially escalate their privileges on the system. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
See more information about CVE-2020-25637 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: | 6.7 | Base Metrics: | AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
| Access Vector: | Local network | Attack Complexity: | Low |
| Privileges Required: | High | User Interaction: | None |
| Scope: | Unchanged | Confidentiality Impact: | High |
| Integrity Impact: | High | Availability Impact: | High |
Errata information
| Platform | Errata | Release Date |
| Oracle Linux version 7 (libvirt) | ELSA-2020-5040 | 2020-11-11 |
| Oracle Linux version 7 (libvirt) | ELSA-2020-5961 | 2020-12-01 |
| Oracle Linux version 8 (hivex) | ELSA-2021-1762 | 2021-05-25 |
| Oracle Linux version 8 (libguestfs) | ELSA-2021-1762 | 2021-05-25 |
| Oracle Linux version 8 (libguestfs-winsupport) | ELSA-2021-1762 | 2021-05-25 |
| Oracle Linux version 8 (libiscsi) | ELSA-2021-1762 | 2021-05-25 |
| Oracle Linux version 8 (libnbd) | ELSA-2021-1762 | 2021-05-25 |
| Oracle Linux version 8 (libvirt) | ELSA-2021-1762 | 2021-05-25 |
| Oracle Linux version 8 (libvirt-dbus) | ELSA-2021-1762 | 2021-05-25 |
| Oracle Linux version 8 (libvirt-python) | ELSA-2021-1762 | 2021-05-25 |
| Oracle Linux version 8 (nbdkit) | ELSA-2021-1762 | 2021-05-25 |
| Oracle Linux version 8 (netcf) | ELSA-2021-1762 | 2021-05-25 |
| Oracle Linux version 8 (perl-Sys-Virt) | ELSA-2021-1762 | 2021-05-25 |
| Oracle Linux version 8 (qemu-kvm) | ELSA-2021-1762 | 2021-05-25 |
| Oracle Linux version 8 (seabios) | ELSA-2021-1762 | 2021-05-25 |
| Oracle Linux version 8 (sgabios) | ELSA-2021-1762 | 2021-05-25 |
| Oracle Linux version 8 (supermin) | ELSA-2021-1762 | 2021-05-25 |
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