Summary Red Hat OpenShift on IBM Cloud is affected by a security vulnerability in the Kubernetes API server that may allow an attacker to modify restricted node labels and bypass the node restriction admission plugin (CVE-2023-5408). Vulnerability Details CVEID: CVE-2023-5408 Description: OpenShift Kubernetes could allow a local authenticated attacker to gain elevated privileges on the system, caused by a flaw in the node restriction admission plugin. By sending a specially crafted request, an authenticated attacker could exploit this vulnerability to gain elevated privileges. CVSS Base Score: 8.2 CVSS Temporal Score: https://exchange.xforce.ibmcloud.com/vulnerabilities/270452 for more information CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H) Affected Products and Versions Red Hat OpenShift on IBM Cloud 4.13.0-4.13.18 Red Hat OpenShift on IBM Cloud 4.12.0-4.12.42 Red Hat OpenShift on IBM Cloud 4.11.0-4.11.53 Red Hat OpenShift on IBM Cloud 3.11-4.10 Remediation/Fixes Updates for Red Hat OpenShift on IBM Cloud clusters at version 4.11 or later are available that fix this vulnerability. Red Hat OpenShift on IBM Cloud will attempt to automatically apply the fix to your cluster master. There is no need to update cluster worker nodes for this vulnerability. To verify your clusters are no longer exposed to this vulnerability, use the following IBM Cloud CLI command to confirm your cluster master versions: ibmcloud oc clusters If your cluster masters are at one of…Read More