GCP Terraform Misconfiguration: GKE Cluster Administrative Interface Access Control

Abstract

Terraform 配置未定义任何授权网络来限制 GKE 控制平面访问。

Explanation

GKE 控制平面对群集做出全局决策，默认情况下，它的许多 API 端点都是可公开访问的。使用允许列表添加授权网络可以为控制平面访问提供网络级保护。

示例 1：以下示例 Terraform 配置设置了一个未在 master_authorized_networks_config 块中定义任何授权网络的公共群集。因此，GKE 控制平面 API 端点可公开访问。


resource "google_container_cluster" "cluster_demo" {
  name = "name-demo"
}

References

[1] HashiCorp google_container_cluster

[2] Google Cloud Add authorized networks for control plane access

[3] Standards Mapping - CIS Google Kubernetes Engine Benchmark Recommendation 5.6.3

[4] Standards Mapping - Common Weakness Enumeration CWE ID 749

[5] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-000213, CCI-000804, CCI-001082, CCI-001084, CCI-002165

[6] Standards Mapping - FIPS200 AC

[7] Standards Mapping - General Data Protection Regulation (GDPR) Access Violation

[8] Standards Mapping - NIST Special Publication 800-53 Revision 4 AC-3 Access Enforcement (P1), IA-8 Identification and Authentication (Non-Organizational Users) (P1), SC-2 Application Partitioning (P1), SC-3 Security Function Isolation (P1)

[9] Standards Mapping - NIST Special Publication 800-53 Revision 5 AC-3 Access Enforcement, IA-8 Identification and Authentication (Non-Organizational Users), SC-2 Separation of System and User Functionality, SC-3 Security Function Isolation

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

[11] Standards Mapping - OWASP Application Security Verification Standard 4.0 4.1.1 General Access Control Design (L1 L2 L3), 14.5.1 Validate HTTP Request Header Requirements (L1 L2 L3)

[12] Standards Mapping - OWASP Top 10 2017 A5 Broken Access Control

[13] Standards Mapping - OWASP Top 10 2021 A01 Broken Access Control

[14] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.8

[15] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4

[16] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4

[17] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 5.4 - Authentication and Access Control

[18] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 5.4 - Authentication and Access Control

[19] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 5.4 - Authentication and Access Control, Control Objective C.2.3 - Web Software Access Controls

[20] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-001870 CAT II, APSC-DV-002150 CAT II, APSC-DV-002360 CAT II

[21] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-001870 CAT II, APSC-DV-002150 CAT II, APSC-DV-002360 CAT II

[22] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-001870 CAT II, APSC-DV-002150 CAT II, APSC-DV-002360 CAT II

[23] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-001870 CAT II, APSC-DV-002150 CAT II, APSC-DV-002360 CAT II

[24] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II, APSC-DV-001870 CAT II, APSC-DV-002150 CAT II, APSC-DV-002360 CAT II

desc.structural.hcl.gcp_terraform_misconfiguration_gke_cluster_administrative_interface_access_control