mcp-server-semgrep/semgrep-rules/terraform/azure/security/storage/storage-default-action-deny.yaml

MCP Server for Semgrep Integration - static code analysis with AI

rules:
- id: storage-default-action-deny
  message: >-
    Detected a Storage that was not configured to deny action by default. Add `default_action = "Deny"`
    in your resource block.
  patterns:
  - pattern: resource
  - pattern-not-inside: |
      resource "azurerm_storage_account_network_rules" "..." {
      ...
        default_action = "Deny"
      ...
      }
  - pattern-inside: |
      resource "azurerm_storage_account_network_rules" "..." {
      ...
        default_action = "Allow"
      ...
      }
  metadata:
    cwe:
    - 'CWE-16: CWE CATEGORY: Configuration'
    category: security
    technology:
    - terraform
    - azure
    references:
    - https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/storage_account_network_rules#default_action
    - https://docs.microsoft.com/en-us/azure/firewall/rule-processing
    owasp:
    - A06:2017 - Security Misconfiguration
    - A05:2021 - Security Misconfiguration
    subcategory:
    - audit
    likelihood: LOW
    impact: LOW
    confidence: LOW
  languages: [hcl]
  severity: ERROR