Kubernetes configuration files such as Kubeconfig, Kubeletconfig, and Kubeadmconfig are critical for managing the cluster's operations. Unauthorized access or modification of these files can lead to severe consequences for the cluster, including:
Cluster Paralysis: Unauthorized changes to the configuration files can disrupt the Kubernetes control plane. For example, modifying Kubeadmconfig can affect cluster initialization, upgrades, and version compatibility, potentially rendering the cluster inoperable.
Service Disruption: The Kubeletconfig file governs the lifecycle of pods on nodes. Unauthorized modifications to this file can result in node failures and significant service disruptions, affecting the entire application ecosystem.
Security Breaches: Accessing the Kubeconfig file can provide attackers with admin-level access to the Kubernetes cluster, leading to unauthorized deployments, data theft, and loss of control over the cluster.
Configuration Leakage: If these configuration files are exposed, attackers can obtain sensitive cluster information such as endpoints, certificates, and API server details, increasing the risk of targeted attacks.
To mitigate these risks, implementing strict access controls and security measures is essential.
