The Kubernetes Controller Manager must create unique service accounts for each work payload.
An XCCDF Rule
Description
<VulnDiscussion>The Kubernetes Controller Manager is a background process that embeds core control loops regulating cluster system state through the API Server. Every process executed in a pod has an associated service account. By default, service accounts use the same credentials for authentication. Implementing the default settings poses a High risk to the Kubernetes Controller Manager. Setting the "--use-service-account-credential" value lowers the attack surface by generating unique service accounts settings for each controller instance.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>
- ID
- SV-242381r927239_rule
- Severity
- High
- References
- Updated
Remediation - Manual Procedure
Edit the Kubernetes Controller Manager manifest file in the /etc/kubernetes/manifests directory on the Kubernetes Control Plane.
Set the value of "--use-service-account-credentials" to "true".