CVE-2023-5408: Openshift: modification of node role labels
First published: Wed Oct 04 2023(Updated: )
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.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Redhat Openshift Container Platform | =4.11 | |
| Redhat Openshift Container Platform | =4.12 | |
| Redhat Openshift Container Platform | =4.13 | |
| Redhat Openshift Container Platform | =4.14 |
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Reference Links
- https://access.redhat.com/errata/RHSA-2023:5006
- https://access.redhat.com/errata/RHSA-2023:6130
- https://access.redhat.com/errata/RHSA-2023:6842
- https://access.redhat.com/errata/RHSA-2023:7479
- https://access.redhat.com/security/cve/CVE-2023-5408
- https://bugzilla.redhat.com/show_bug.cgi?id=2242173
- https://github.com/openshift/kubernetes/pull/1736
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.
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