feat: add cisbenchmark checks for session 1.2 API Server

[josedonizetti]

Signed-off-by: Jose Donizetti jdbjunior@gmail.com

Adds rules for session 1.2 API Server (up to 1.2.30, for now 1.2.31 and 1.2.32 are not included). This is my first time writing opa, let me know if you see anything that can be improved.

aquasecurity/trivy#2200

cisbenchmark version: V1.23

"KCV0001": "1.2.1 Ensure that the --anonymous-auth argument is set to false (Manual)",
"KCV0002": "1.2.2 Ensure that the --token-auth-file parameter is not set (Automated)",
"KCV0003": "1.2.3 Ensure that the --DenyServiceExternalIPs is not set (Automated)",
"KCV0004": "1.2.4 Ensure that the --kubelet-https argument is set to true (Automated)",
"KCV0005": "1.2.5 Ensure that the --kubelet-client-certificate and --kubelet-client-key arguments are set as appropriate (Automated)",
"KCV0006": "1.2.6 Ensure that the --kubelet-certificate-authority argument is set as appropriate (Automated)",
"KCV0007": "1.2.7 Ensure that the --authorization-mode argument is not set to AlwaysAllow (Automated)",
"KCV0008": "1.2.8 Ensure that the --authorization-mode argument includes Node (Automated)",
"KCV0009": "1.2.9 Ensure that the --authorization-mode argument includes RBAC (Automated)",
"KCV0010": "1.2.10 Ensure that the admission control plugin EventRateLimit is set (Manual)",
"KCV0011": "1.2.11 Ensure that the admission control plugin AlwaysAdmit is not set (Automated)",
"KCV0012": "1.2.12 Ensure that the admission control plugin AlwaysPullImages is set (Manual)",
"KCV0013": "1.2.13 Ensure that the admission control plugin SecurityContextDeny is set if PodSecurityPolicy is not used (Manual)",
"KCV0014": "1.2.14 Ensure that the admission control plugin ServiceAccount is set (Automated)",
"KCV0015": "1.2.15 Ensure that the admission control plugin NamespaceLifecycle is set (Automated)",
"KCV0016": "1.2.16 Ensure that the admission control plugin NodeRestriction is set (Automated)",
"KCV0017": "1.2.17 Ensure that the --secure-port argument is not set to 0 (Automated)",
"KCV0018": "1.2.18 Ensure that the --profiling argument is set to false (Automated)",
"KCV0019": "1.2.19 Ensure that the --audit-log-path argument is set (Automated)",
"KCV0020": "1.2.20 Ensure that the --audit-log-maxage argument is set to 30 or as appropriate (Automated)",
"KCV0021": "1.2.21 Ensure that the --audit-log-maxbackup argument is set to 10 or as appropriate (Automated)",
"KCV0022": "1.2.22 Ensure that the --audit-log-maxsize argument is set to 100 or as appropriate (Automated)",
"KCV0024": "1.2.24 Ensure that the --service-account-lookup argument is set to true (Automated)",
"KCV0025": "1.2.25 Ensure that the --service-account-key-file argument is set as appropriate (Automated)",
"KCV0026": "1.2.26 Ensure that the --etcd-certfile and --etcd-keyfile arguments are set as appropriate (Automated)",
"KCV0027": "1.2.27 Ensure that the --tls-cert-file and --tls-private-key-file arguments are set as appropriate (Automated)",
"KCV0028": "1.2.28 Ensure that the --client-ca-file argument is set as appropriate (Automated)",
"KCV0029": "1.2.29 Ensure that the --etcd-cafile argument is set as appropriate (Automated)",
"KCV0030": "1.2.30 Ensure that the --encryption-provider-config argument is set as appropriate (Manual)",

[josedonizetti]

@chen-keinan ^^

[chen-keinan]

@josedonizetti , look amazing can you put more details on , it will be clear to understand:

• which cis bench was the the checks written against
• mapping between rego checks and cis checks

[chen-keinan]

LGTM! only one comment , maybe change the prefix id , KCVXXX or something, so we could be able to easily identified it as cis-bench release in Trivy and trivy operator if needed

[josedonizetti]

@chen-keinan prefix id changed!

[josedonizetti]

@liamg @owenrumney This is ready for review now.