1.2.12 Ensure that the admission control plugin SecurityContextDeny is set if PodSecurityPolicy is not used

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The SecurityContextDeny admission controller can be used to deny pods which make use of some SecurityContext fields which could allow for privilege escalation in the cluster. This should be used where PodSecurityPolicy is not in place within the cluster.


SecurityContextDeny can be used to provide a layer of security for clusters which do not have PodSecurityPolicies enabled.


This admission controller should only be used where Pod Security Policies cannot be used on the cluster, as it can interact poorly with certain Pod Security Policies


Edit the API server pod specification file /etc/kubernetes/manifests/kube-apiserver.yaml on the Control Plane node and set the --enable-admission-plugins parameter to include SecurityContextDeny, unless PodSecurityPolicy is already in place.


Default Value:

By default, SecurityContextDeny is not set.

See Also