Rancher RKE2 components must be configured in accordance with the security configuration settings based on DOD security configuration or implementation guidance, including SRGs, STIGs, NSA configuration guides, CTOs, and DTMs.

An XCCDF Rule

Description

<VulnDiscussion>Once an attacker establishes access to a system, the attacker often attempts to create a persistent method of re-establishing access. One way to accomplish this is for the attacker to modify an existing account. Auditing of account creation is one method for mitigating this risk. A comprehensive account management process will ensure an audit trail documents the creation of application user accounts and, as required, notifies administrators and/or application when accounts are created. Such a process greatly reduces the risk that accounts will be surreptitiously created and provides logging that can be used for forensic purposes. Within Rancher RKE2, audit data can be generated from any of the deployed container platform components. This audit data is important when there are issues, such as security incidents, that must be investigated. To make the audit data worthwhile for the investigation of events, it is necessary to know where within the container platform the event occurred. To address access requirements, many application developers choose to integrate their applications with enterprise-level authentication/access/auditing mechanisms that meet or exceed access control policy requirements. Such integration allows the application developer to offload those access control functions and focus on core application features and functionality. Satisfies: SRG-APP-000026-CTR-000070, SRG-APP-000027-CTR-000075, SRG-APP-000028-CTR-000080, SRG-APP-000092-CTR-000165, SRG-APP-000095-CTR-000170, SRG-APP-000096-CTR-000175, SRG-APP-000097-CTR-000180, SRG-APP-000098-CTR-000185, SRG-APP-000099-CTR-000190, SRG-APP-000100-CTR-000195, SRG-APP-000101-CTR-000205, SRG-APP-000319-CTR-000745, SRG-APP-000320-CTR-000750, SRG-APP-000343-CTR-000780, SRG-APP-000358-CTR-000805, SRG-APP-000374-CTR-000865, SRG-APP-000375-CTR-000870, SRG-APP-000381-CTR-000905, SRG-APP-000409-CTR-000990, SRG-APP-000492-CTR-001220, SRG-APP-000493-CTR-001225, SRG-APP-000494-CTR-001230, SRG-APP-000495-CTR-001235, SRG-APP-000496-CTR-001240, SRG-APP-000497-CTR-001245, SRG-APP-000498-CTR-001250, SRG-APP-000499-CTR-001255, SRG-APP-000500-CTR-001260, SRG-APP-000501-CTR-001265, SRG-APP-000502-CTR-001270, SRG-APP-000503-CTR-001275, SRG-APP-000504-CTR-001280, SRG-APP-000505-CTR-001285, SRG-APP-000506-CTR-001290, SRG-APP-000507-CTR-001295, SRG-APP-000508-CTR-001300, SRG-APP-000509-CTR-001305, SRG-APP-000510-CTR-001310, SRG-APP-000516-CTR-000790, SRG-APP-00516-CTR-001325</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>

ID: SV-254555r1028345_rule
Severity: Medium
References: CCI-000018 CCI-000130 CCI-000131 CCI-000132 CCI-000133 CCI-000134 CCI-000135 CCI-000172 CCI-000366 CCI-001403 CCI-001404 CCI-001464 CCI-001487 CCI-001851 CCI-001889 CCI-001890 CCI-002130 CCI-002234 CCI-002884 CCI-003938
Updated: 19 days ago

Audit logging and policies:

Edit the /etc/rancher/rke2/config.yaml file, and enable the audit policy:
audit-policy-file: /etc/rancher/rke2/audit-policy.yaml

1. Edit the RKE2 Server configuration file on all RKE2 Server hosts, located at /etc/rancher/rke2/config.yaml, so that it contains required configuration.
--audit-policy-file= Path to the file that defines the audit policy configuration. (Example: /etc/rancher/rke2/audit-policy.yaml)
--audit-log-mode=blocking-strict

If configuration file is updated, restart the RKE2 Server. Run the command:
systemctl restart rke2-server

2. Edit the RKE2 Server configuration file on all RKE2 Server hosts, located at /etc/rancher/rke2/config.yaml, so that it contains required configuration.

If using RKE2 v1.24 or older, set:
profile: cis-1.6

If using RKE2 v1.25 or newer, set:
profile: cis-1.23

Available with October 2023 releases (v1.25.15+rke2r1, v1.26.10+rke2r1, v1.27.7+rke2r1, v1.28.3+rke2r1), use the generic profile "cis".

If configuration file is updated, restart the RKE2 Server. Run the command:
systemctl restart rke2-server

3. Edit the audit policy file, by default located at /etc/rancher/rke2/audit-policy.yaml to look like below:

apiVersion: audit.k8s.io/v1
kind: Policy
metadata:
  name: rke2-audit-policy
rules:
  - level: Metadata
    resources:
    - group: ""
      resources: ["secrets"]
  - level: RequestResponse
    resources:
    - group: ""
      resources: ["*"]

If configuration files are updated on a host, restart the RKE2 Service. Run the command "systemctl restart rke2-server" for server hosts and "systemctl restart rke2-agent" for agent hosts.

Rancher RKE2 components must be configured in accordance with the security configuration settings based on DOD security configuration or implementation guidance, including SRGs, STIGs, NSA configuration guides, CTOs, and DTMs.

Description

Remediation - Manual Procedure