terraform.azure.security.azure-mariadb-public-access-disabled.azure-mariadb-public-access-disabled

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Ensure public network access enabled is set to False for MariaDB servers

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Defintion

rules:
  - id: azure-mariadb-public-access-disabled
    message: Ensure public network access enabled is set to False for MariaDB servers
    patterns:
      - pattern: resource
      - pattern-inside: |
          resource "azurerm_mariadb_server" "..." {
          ...
          }
      - pattern-not-inside: |
          resource "azurerm_mariadb_server" "..." {
          ...
          public_network_access_enabled = false
          ...
          }
    metadata:
      owasp:
        - A05:2017 - Broken Access Control
        - A01:2021 - Broken Access Control
      cwe:
        - "CWE-284: Improper Access Control"
      category: security
      technology:
        - terraform
        - azure
      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

azure-mariadb-public-access-disabled.tf

# fail
# ruleid: azure-mariadb-public-access-disabled
resource "azurerm_mariadb_server" "example" {
    name                = var.server_name
    location            = var.resource_group.location
    resource_group_name = var.resource_group.name
    administrator_login          = var.admin_login
    administrator_login_password = random_string.password.result
    sku_name   = "B_Gen5_2"
    storage_mb = 5120
    version    = "10.2"
    auto_grow_enabled             = true
    backup_retention_days         = 7
    geo_redundant_backup_enabled  = false
    public_network_access_enabled = true
    ssl_enforcement_enabled = false
}

# pass
resource "azurerm_mariadb_server" "example" {
    name                = var.server_name
    location            = var.resource_group.location
    resource_group_name = var.resource_group.name
    administrator_login          = var.admin_login
    administrator_login_password = random_string.password.result
    sku_name   = "B_Gen5_2"
    storage_mb = 5120
    version    = "10.2"
    auto_grow_enabled             = true
    backup_retention_days         = 7
    geo_redundant_backup_enabled  = false
    public_network_access_enabled = false
    ssl_enforcement_enabled = true
}