GCP Terraform Misconfiguration: Weak GKE Cluster Network Management

Abstract

Terraform 組態不會將叢集網路模式設定為 VPC 原生。

Explanation

GKE 支援兩種叢集網路模式：路徑導向和 VPC 原生。VPC 原生叢集使用別名 IP 位址範圍，將流量從節點中的一個 Pod 路由傳送到另一個 Pod。如此可允許將以 IP 為主的精確原則和防火牆規則用於 Pod。相較之下，整個節點是路徑導向叢集中最精細的控制等級。

範例 1：以下範例 Terraform 組態透過將 networking_mode 設定為 ROUTES 而不啟用 VPC 原生叢集。


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