OpenShift must separate user functionality (including user interface services) from information system management functionality.
An XCCDF Rule
Description
<VulnDiscussion>Red Hat Enterprise Linux CoreOS (RHCOS) is a single-purpose container operating system. RHCOS is only supported as a component of the OpenShift Container Platform. Remote management of the RHCOS nodes is performed at the OpenShift Container Platform API level. Any direct access to the RHCOS nodes is unnecessary. RHCOS only has two user accounts defined, root(0) and core(1000). These are the only two user accounts that should exist on the RHCOS nodes. As any administrative access or actions are to be done through the OpenShift Container Platform's administrative APIs, direct logon access to the RHCOS host must be disabled.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>
- ID
- SV-257545r921578_rule
- Severity
- Medium
- References
- Updated
Remediation - Manual Procedure
Disable and remove passwords from root and core accounts by executing the following:
for node in $(oc get node -oname); do oc debug $node -- chroot /host /bin/bash -c 'usermod -p "*" root; usermod -p "*" core' 2>/dev/null; done
Remove any additional user accounts from the nodes by executing the following: