rules:
- id: aws-db-instance-no-logging
  patterns:
  - pattern: |
      resource "aws_db_instance" $ANYTHING {
        ...
      }
  - pattern-not-inside: |
      resource "aws_db_instance" $ANYTHING {
        ...
        enabled_cloudwatch_logs_exports = [$SOMETHING, ...]
        ...
      }
  message: Database instance has no logging. Missing logs can cause missing important event information.
  languages: [hcl]
  severity: WARNING
  metadata:
    owasp:
    - A03:2017 - Sensitive Data Exposure
    - A04:2021 - Insecure Design
    cwe:
    - 'CWE-311: Missing Encryption of Sensitive Data'
    technology:
    - aws
    - terraform
    category: security
    references:
    - https://owasp.org/Top10/A04_2021-Insecure_Design
    subcategory:
    - vuln
    likelihood: MEDIUM
    impact: LOW
    confidence: MEDIUM