Red Hat Enterprise Linux (openvswitch): Schwachstelle ermöglicht Denial of Service
WID-SEC-2023-0964 · first 14.04.2023 · updated 27.01.2026 · CVSS 7,1
What it is about
Red Hat Enterprise Linux (RHEL) ist eine populäre Linux-Distribution. Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in Red Hat Enterprise Linux in openvswitch ausnutzen, um einen Denial of Service Angriff durchzuführen.
Under what conditions?
Over the network, but only with valid access (login required), for example with stolen credentials or as an insider.
What can happen in the worst case
An attacker could use the vulnerability to
- einen Denial of Service Angriff durchzuführen
Am I affected?
Affected according to the BSI:
- Red Hat Enterprise Linux
- Fedora Linux
- SUSE Linux
- Gentoo Linux
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Install the updates provided by the vendor; details in the sources below.
Is the vulnerability already being exploited?
None of the CVEs is in the CISA catalogue of exploited vulnerabilities. That does not mean there are no attacks, only that none are documented.
Information and sources
- Original BSI advisory (WID)
- RedHat Security Advisory vom 2023-04-13 access.redhat.com
- RedHat Security Advisory vom 2023-04-13 access.redhat.com
- RedHat Security Advisory vom 2023-04-13 access.redhat.com
- RedHat Security Advisory vom 2023-04-13 access.redhat.com
- Fedora Security Advisory FEDORA-2023-7DA03DC2AE vom 2023-04-14 bodhi.fedoraproject.org
- Red Hat Security Advisory RHSA-2023:1824 vom 2023-04-18 access.redhat.com
- Red Hat Security Advisory RHSA-2023:1823 vom 2023-04-18 access.redhat.com
- SUSE Security Update SUSE-SU-2023:2275-1 vom 2023-05-23 lists.suse.com
- SUSE Security Update SUSE-SU-2023:2274-1 vom 2023-05-23 lists.suse.com
- SUSE Security Update SUSE-SU-2023:2296-1 vom 2023-05-25 lists.suse.com
- Red Hat Security Advisory RHSA-2023:3491 vom 2023-06-06 access.redhat.com
- SUSE Security Update SUSE-SU-2023:2536-1 vom 2023-06-19 lists.suse.com
- Gentoo Linux Security Advisory GLSA-202311-16 vom 2023-11-26 security.gentoo.org
- SUSE Security Update SUSE-SU-2026:0280-1 vom 2026-01-23 lists.suse.com
- SUSE Security Update SUSE-SU-2026:0290-1 vom 2026-01-26 lists.opensuse.org
CVE: CVE-2023-1668
Source: BSI warning and information service (CERT-Bund); CISA. The assessment of the conditions is my reading of the BSI text; the external pages are in their original language.