mcp-server-semgrep/semgrep-rules/terraform/gcp/security/gcp-compute-firewall-unrestricted-ingress-21.yaml

MCP Server for Semgrep Integration - static code analysis with AI

rules:
- id: gcp-compute-firewall-unrestricted-ingress-21
  patterns:
  - pattern: resource
  - pattern-either:
    - pattern-inside: |
        resource "google_compute_firewall" "..." {
        ...
        allow {
          protocol = "tcp"
          ports    = [21]
        }
        source_ranges = ["0.0.0.0/0"]
        ...
        }
    - pattern-inside: |
        resource "google_compute_firewall" "..." {
        ...
        allow {
          protocol = "tcp"
          ports    = [..., "21", ...]
        }
        source_ranges = ["0.0.0.0/0"]
        ...
        }
  message: >-
    Ensure Google compute firewall ingress does not allow unrestricted FTP access
  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://docs.bridgecrew.io/docs/google-cloud-policy-index
    subcategory:
    - audit
    likelihood: LOW
    impact: LOW
    confidence: LOW
  languages: [hcl]
  severity: WARNING