GCP Terraform Misconfiguration: Weak GKE Cluster Network Management

Abstract

Terraform 配置未将群集网络模式设置为 VPC-native。

Explanation

GKE 支持两种群集网络模式：基于路由和 VPC-native。VPC-native 群集使用别名 IP 地址范围将流量从节点中的一个 Pod 路由到另一个 Pod。这为 Pod 提供了基于 IP 的精确策略和防火墙规则。相反，在基于路由的群集中，整个节点是最精细的控制粒度级别。

示例 1：以下示例 Terraform 配置通过将 networking_mode 设置为 ROUTES，不启用 VPC-native 群集。


resource "google_container_cluster" "cluster_demo" {
...
  networking_mode = "ROUTES"
..
}

References

[1] HashiCorp google_container_cluster

[2] Google Cloud Creating a VPC-native cluster

[3] Standards Mapping - CIS Google Kubernetes Engine Benchmark Recommendation 5.6.2

[4] Standards Mapping - Common Weakness Enumeration CWE ID 923

[5] Standards Mapping - FIPS200 CM

[6] Standards Mapping - NIST Special Publication 800-53 Revision 4 CM-6 Configuration Settings (P1), SC-7 Boundary Protection (P1)

[7] Standards Mapping - NIST Special Publication 800-53 Revision 5 CM-6 Configuration Settings, SC-7 Boundary Protection

[8] Standards Mapping - OWASP API 2023 API8 Security Misconfiguration

[9] Standards Mapping - OWASP Application Security Verification Standard 4.0 1.14.1 Configuration Architectural Requirements (L2 L3)

[10] Standards Mapping - OWASP Top 10 2017 A6 Security Misconfiguration

[11] Standards Mapping - OWASP Top 10 2021 A05 Security Misconfiguration

[12] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 1.2.1

[13] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 1.4.2

[14] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 1.4.2

desc.structural.hcl.gcp_terraform_misconfiguration_weak_gke_cluster_network_management