Rancher MCM must enforce organization-defined circumstances and/or usage conditions for organization-defined accounts.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-257292	SRG-APP-000318-CTR-000740	CNTR-RM-000970	SV-257292r961287_rule	2024-08-27	2

Description
Rancher MCM must verify the certificate used for Rancher's ingress is a valid DOD certificate. This is achieved by verifying the helm installation contains correct parameters.

ℹ️ Check
Verify helm installation contains correct parameters: Navigate to Triple Bar Symbol(Global) >> <local cluster>. From the kubectl shell (>_) Execute: `helm get values rancher -n cattle-system` The output must contain: ``` privateCA: true ingress: tls: source: secret ``` If the output source is not "secret", this is a finding. Verify contents of certificates are correct: From the console, type: kubectl -n cattle-system get secret tls-rancher-ingress -o 'jsonpath={.data.tls\.crt}' \| base64 --decode \| openssl x509 -noout -text kubectl -n cattle-system get secret tls-ca -o 'jsonpath={.data.cacerts\.pem}' \| base64 --decode \| openssl x509 -noout -text

ℹ️ Check

Verify helm installation contains correct parameters: Navigate to Triple Bar Symbol(Global) >> <local cluster>. From the kubectl shell (>_) Execute: `helm get values rancher -n cattle-system` The output must contain: ``` privateCA: true ingress: tls: source: secret ``` If the output source is not "secret", this is a finding. Verify contents of certificates are correct: From the console, type: kubectl -n cattle-system get secret tls-rancher-ingress -o 'jsonpath={.data.tls\.crt}' | base64 --decode | openssl x509 -noout -text kubectl -n cattle-system get secret tls-ca -o 'jsonpath={.data.cacerts\.pem}' | base64 --decode | openssl x509 -noout -text

✔️ Fix
Update the secrets to contain valid certificates. Put the correct and valid DOD certificate and key in files called "tls.crt" and "tls.key", respectively, and then run: kubectl -n cattle-system create secret tls tls-rancher-ingress \ --cert=tls.crt \ --key=tls.key Upload the CA required for the certs by creating another file called "cacerts.pem" and running: kubectl -n cattle-system create secret generic tls-ca \ --from-file=cacerts.pem=./cacerts.pem The helm chart values need to be updated to include the check section: privateCA: true ingress: tls: source: secret Rerun helm upgrade with the new values for the certs to take effect.

✔️ Fix

Update the secrets to contain valid certificates. Put the correct and valid DOD certificate and key in files called "tls.crt" and "tls.key", respectively, and then run: kubectl -n cattle-system create secret tls tls-rancher-ingress \ --cert=tls.crt \ --key=tls.key Upload the CA required for the certs by creating another file called "cacerts.pem" and running: kubectl -n cattle-system create secret generic tls-ca \ --from-file=cacerts.pem=./cacerts.pem The helm chart values need to be updated to include the check section: privateCA: true ingress: tls: source: secret Rerun helm upgrade with the new values for the certs to take effect.