rules:
- id: aws-rds-backup-no-retention
  patterns:
  - pattern-either:
    - pattern: |
        resource "aws_rds_cluster" $ANYTHING {
          ...
          backup_retention_period = 0
          ...
        }
    - pattern: |
        resource "aws_db_instance" $ANYTHING {
          ...
          backup_retention_period = 0
          ...
        }
  message: The AWS RDS has no retention. Missing retention can cause losing important event information.
    To fix this, set a `backup_retention_period`.
  languages: [hcl]
  severity: WARNING
  metadata:
    owasp:
    - A03:2017 - Sensitive Data Exposure
    cwe:
    - 'CWE-320: CWE CATEGORY: Key Management Errors'
    technology:
    - aws
    - terraform
    category: security
    references:
    - https://owasp.org/Top10/A02_2021-Cryptographic_Failures
    subcategory:
    - vuln
    likelihood: MEDIUM
    impact: MEDIUM
    confidence: MEDIUM