CVE-2023-5408: Openshift: modification of node role labels
A flaw was discovered in the node restriction admission plugin of the kubernetes api server of OpenShift. It could allow steering workloads from the control plane and etcd nodes onto a different worker node and gain higher credentials on the cluster.
Other sources
A privilege escalation flaw was found in the node restriction admission plugin of the kubernetes api server of OpenShift. A remote attacker who modifies the node role label could steer workloads from the control plane and etcd nodes onto different worker nodes and gain broader access to the cluster.
— NVD
Affected Software
Event History
Frequently Asked Questions
What is CVE-2023-5408?
CVE-2023-5408 is a privilege escalation vulnerability in the node restriction admission plugin of the Kubernetes API server of OpenShift.
How does CVE-2023-5408 impact OpenShift?
CVE-2023-5408 allows a remote attacker to modify the node role label, potentially steering workloads onto different worker nodes and gaining broader access to the cluster.
What is the severity of CVE-2023-5408?
CVE-2023-5408 has a severity rating of 8.2 (high).
How can I fix CVE-2023-5408?
To fix CVE-2023-5408, you should apply the provided security patch from RedHat and update your OpenShift Container Platform to version 4.13.
Where can I find more information about CVE-2023-5408?
You can find more information about CVE-2023-5408 in the RedHat Security Advisory (RHSA-2023:6130) and the associated CVE-2023-5408 and Bugzilla links.