TMA-KUBERNETES-1.2.8

Ensure that the --authorization-mode argument includes RBAC

高级别 1自动化kubernetes

说明

Turn on Role Based Access Control. Audited on control-plane nodes from the running process arguments (falls back to the kubeadm static pod manifest); SKIPs on nodes without that manifest.

检查方式

审计方法: Shell 命令

shell

set -f
a=$(ps -eo args 2>/dev/null | grep -E '^([^ ]*/)?kube-apiserver( |$)' | head -n 1)
[ -n "$a" ] || a=$(sed -n 's/^[[:space:]]*-[[:space:]]*"\{0,1\}\(--[^"]*\)"\{0,1\}[[:space:]]*$/\1/p' /etc/kubernetes/manifests/kube-apiserver.yaml | tr '\n' ' ')
[ -n "$a" ] || exit 1
g() { printf '%s\n' "$a" | awk -v k="--$1" '{for(i=1;i<=NF;i++){if($i==k&&i<NF)v=$(i+1); else if(index($i,k"=")==1)v=substr($i,length(k)+2)}} END{if(v!="")print v}'; }
has() { printf '%s\n' "$a" | awk -v k="--$1" '{for(i=1;i<=NF;i++) if($i==k||index($i,k"=")==1) f=1} END{exit !f}'; }
ok=1
v=$(g authorization-mode); case ",$v," in *,RBAC,*) ;; *) echo "noncompliant: --authorization-mode=$v lacks RBAC"; ok=0;; esac
if [ "$ok" -eq 1 ]; then echo compliant; fi

预期输出: compliant

修复方式

修复方法: 操作指南或基础设施补丁

Edit the API server pod specification file /etc/kubernetes/manifests/kube-apiserver.yaml on the Control Plane node and set the --authorization-mode parameter to a value that includes RBAC, for example: --authorization-mode=Node,RBAC

属性

操作系统: 任意
标签: kubernetesapi-serverrbac
参考: CIS Kubernetes Benchmark v2.1.0 - 1.2.8 Ensure that the --authorization-mode argument includes RBAC

检查本机

请在您有权审计的机器上运行此命令。扫描为只读操作。

shell

tmaegis scan --target kubernetes