CVE-2020-25637
Published: August 31, 2023Last modified: August 31, 2023
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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 6.7 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | HIGH |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity impact | HIGH |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | libvirt | Not affected (8.9.0-r5) |
| Stream | libvirt | Not affected (9.6.0-r0) |
References
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00072.html
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00073.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1881037
- https://lists.debian.org/debian-lts-announce/2024/04/msg00000.html
- https://security.gentoo.org/glsa/202210-06