terraform.gcp.security.gcp-project-member-default-service-account-iam-member.gcp-project-member-default-service-account-iam-member

profile photo of semgrepsemgrep
Author
unknown
Download Count*

Ensure Default Service account is not used at a project level

Run Locally

Run in CI

Defintion

rules:
  - id: gcp-project-member-default-service-account-iam-member
    patterns:
      - pattern: resource
      - pattern-inside: |
          resource "google_project_iam_member" "..." {
          ...
          member = $MEMBER
          ...
          }
      - metavariable-regex:
          metavariable: $MEMBER
          regex: ((.*)-compute@developer.gserviceaccount.com)
    message: Ensure Default Service account is not used at a project level
    metadata:
      owasp:
        - A05:2017 - Broken Access Control
        - A01:2021 - Broken Access Control
      cwe:
        - "CWE-284: Improper Access Control"
      category: security
      technology:
        - terraform
        - gcp
      references:
        - https://owasp.org/Top10/A01_2021-Broken_Access_Control
      subcategory:
        - audit
      likelihood: LOW
      impact: LOW
      confidence: LOW
      license: Commons Clause License Condition v1.0[LGPL-2.1-only]
      vulnerability_class:
        - Improper Authorization
    languages:
      - hcl
    severity: WARNING

Examples

gcp-project-member-default-service-account-iam-member.tf

# fail
# ruleid: gcp-project-member-default-service-account-iam-member
resource "google_project_iam_member" "fail" {
    project = "your-project-id"
    role    = "roles/resourcemanager.organizationAdmin"
    member  = "serviceAccount:test-compute@developer.gserviceaccount.com"
}

# ok: gcp-project-member-default-service-account-iam-member
resource "google_project_iam_member" "success" {
    project = "your-project-id"
    role    = "roles/other"
    member  = "user@mail.com"
}