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Kubernetes API Server must disable token authentication to protect information in transit.

An XCCDF Rule

Description

<VulnDiscussion>Kubernetes token authentication uses password known as secrets in a plaintext file. This file contains sensitive information such as token, username and user uid. This token is used by service accounts within pods to authenticate with the API Server. This information is very valuable for attackers with malicious intent if the service account is privileged having access to the token. With this token a threat actor can impersonate the service account gaining access to the Rest API service.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>

ID
SV-245543r961632_rule
Severity
High
References
Updated



Remediation - Manual Procedure

Edit the Kubernetes API Server manifest file in the /etc/kubernetes/manifests directory on the Kubernetes Control Plane. 

Remove the setting "--token-auth-file".