Finding ID | Version | Rule ID | IA Controls | Severity |
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V-254554 | CNTR-R2-000030 | SV-254554r918252_rule | Medium |
Description |
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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. |
STIG | Date |
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Rancher Government Solutions RKE2 Security Technical Implementation Guide | 2023-11-30 |
Check Text ( C-58038r859230_chk ) |
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Ensure use-service-account-credentials argument is set correctly. Run this command on the RKE2 Control Plane: /bin/ps -ef | grep kube-controller-manager | grep -v grep If --use-service-account-credentials argument is not set to "true" or is not configured, this is a finding. |
Fix Text (F-57987r918225_fix) |
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Edit the RKE2 Configuration File /etc/rancher/rke2/config.yaml on the RKE2 Control Plane and set the following "kube-controller-manager-arg" argument: - use-service-account-credentials=true Once the configuration file is updated, restart the RKE2 Server. Run the command: systemctl restart rke2-server |