Control: Minimize the admission of containers wishing to share the host process ID namespace
Description
A container running in the host's PID namespace can inspect processes running outside the container. If the container also has access to ptrace capabilities this can be used to escalate privileges outside of the container. There should be at least one PodSecurityPolicy (PSP) defined which does not permit containers to share the host PID namespace.
Usage
Run the control in your terminal:
powerpipe control run kubernetes_compliance.control.pod_security_policy_hostpid_sharing_disabledSnapshot and share results via Turbot Pipes:
powerpipe loginpowerpipe control run kubernetes_compliance.control.pod_security_policy_hostpid_sharing_disabled --shareSQL
This control uses a named query:
pod_security_policy_hostpid_sharing_disabled