GCP Terraform Misconfiguration: GKE Cluster Legacy Authorization

Abstract

Terraform 配置在 GKE 群集上启用了传统的 ABAC 授权。

Explanation

默认情况下，在运行 GKE 1.8 及更高版本的新群集上，基于属性的访问控制 (ABAC) 处于禁用状态。除了基于角色的访问控制 (RBAC) 或身份和访问管理 (IAM) 提供的权限之外，ABAC 还可以静态授予特定用户或组对资源的访问权限。这会使授权管理复杂化，并破坏集中式访问控制。

示例 1：以下示例显示的 Terraform 配置通过将 enable_legacy_abac 设置为 true，启用了 GKE 群集上的传统 ABAC 授权。


resource "google_container_cluster" "container_cluster_demo" {
...
  enable_legacy_abac = true
...
}

References

[1] HashiCorp google_container_cluster

[2] Google Cloud Setting the default node image type

[3] Google Cloud Configure role-based access control

[4] Standards Mapping - CIS Google Kubernetes Engine Benchmark Recommendation 5.8.4

[5] Standards Mapping - Common Weakness Enumeration CWE ID 637

[6] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-000213, CCI-002165

[7] Standards Mapping - FIPS200 AC

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

[9] Standards Mapping - NIST Special Publication 800-53 Revision 4 AC-3 Access Enforcement (P1)

[10] Standards Mapping - NIST Special Publication 800-53 Revision 5 AC-3 Access Enforcement

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

[12] Standards Mapping - OWASP Application Security Verification Standard 4.0 1.4.4 Access Control Architectural Requirements (L2 L3), 4.1.3 General Access Control Design (L1 L2 L3), 4.1.5 General Access Control Design (L1 L2 L3), 4.2.1 Operation Level Access Control (L1 L2 L3), 13.1.4 Generic Web Service Security Verification Requirements (L2 L3)

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

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

[15] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.8, Requirement 7.2

[16] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4, Requirement 7.3.1

[17] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4, Requirement 7.3.1

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

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

[20] 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

[21] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II

[22] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II

[23] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II

[24] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II

[25] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-000460 CAT I, APSC-DV-000470 CAT II

desc.structural.hcl.gcp_terraform_misconfiguration_gke_cluster_legacy_authorization