TMA-KUBERNETES-5.2.2

Minimize the admission of privileged containers

严重级别 1自动化kubernetes

说明

Do not generally permit containers to be run with the securityContext.privileged flag set to true. Requires kubectl with cluster-wide read access (KUBECONFIG); system namespaces are excluded and listed resources must be remediated or documented as exceptions. The benchmark marks this Manual; this audit automates its kubectl inventory step.

检查方式

审计方法: Shell 命令

shell

out=$(kubectl get pods -A -o go-template='{{range .items}}{{$ns:=.metadata.namespace}}{{$p:=.metadata.name}}{{range .spec.containers}}{{$ns}} {{$p}} {{.name}} {{with .securityContext}}{{.privileged}}{{end}}{{"\n"}}{{end}}{{range .spec.initContainers}}{{$ns}} {{$p}} {{.name}} {{with .securityContext}}{{.privileged}}{{end}}{{"\n"}}{{end}}{{range .spec.ephemeralContainers}}{{$ns}} {{$p}} {{.name}} {{with .securityContext}}{{.privileged}}{{end}}{{"\n"}}{{end}}{{end}}') || exit 1
bad=$(printf '%s\n' "$out" | awk -v ex='^(kube-system|kube-public|kube-node-lease)$' 'NF && $1 !~ ex && ($4=="true")')
if [ -z "$bad" ]; then echo compliant; else printf '%s\n' "$bad" | head -n 25; 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

Add policies to each namespace in the cluster which has user workloads to restrict the admission of privileged containers.

属性

操作系统: 任意
标签: kubernetespoliciespod-security
参考: CIS Kubernetes Benchmark v2.1.0 - 5.2.2 Minimize the admission of privileged containers

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