STIGQter: STIG Summary: Rancher Government Solutions RKE2 Security Technical Implementation Guide Version: 2 Release: 7 Benchmark Date: 01 Jul 2026:

The Kubernetes Controller Manager must have secure binding.

DISA Rule

SV-254556r1137638_rule

Vulnerability Number

V-254556

Group Title

SRG-APP-000033-CTR-000090

Rule Version

CNTR-R2-000100

Severity

CAT II

CCI(s)

• CCI-000213 - Enforce approved authorizations for logical access to information and system resources in accordance with applicable access control policies.

Weight

10

Fix Recommendation

Edit the RKE2 Configuration File /etc/rancher/rke2/config.yaml on the RKE2 Control Plane and set the following "kube-controller-manager-arg" argument:
- bind-address=127.0.0.1

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

Check Contents

Ensure bind-address is set correctly.

Run this command on the RKE2 Control Plane:
/bin/ps -ef | grep kube-controller-manager | grep -v grep

If --bind-address is not set to "127.0.0.1" or is not configured, this is a finding.

Vulnerability Number

V-254556

Documentable

False

Rule Version

CNTR-R2-000100

Severity Override Guidance

Ensure bind-address is set correctly.

Run this command on the RKE2 Control Plane:
/bin/ps -ef | grep kube-controller-manager | grep -v grep

If --bind-address is not set to "127.0.0.1" or is not configured, this is a finding.

Check Content Reference

M

Target Key

5486