AWS App Flow flow does not use Customer Managed Keys (CMKs)

Description

This policy identifies App Flow flow which are encrypted with default KMS keys and not with Keys managed by Customer. It is a best practice to use customer managed KMS Keys to encrypt your App Flow flow data. It gives you full control over the encrypted data.

Code Example

resource "aws_appflow_flow" "pass" {
  name = "example"

  source_flow_config {
    connector_type = "S3"
    source_connector_properties {
      s3 {
        bucket_name   = aws_s3_bucket_policy.example_source.bucket
        bucket_prefix = "example"
      }
    }
  }

  destination_flow_config {
    connector_type = "S3"
    destination_connector_properties {
      s3 {
        bucket_name = aws_s3_bucket_policy.example_destination.bucket

        s3_output_format_config {
          prefix_config {
            prefix_type = "PATH"
          }
        }
      }
    }
  }

  task {
    source_fields     = ["exampleField"]
    destination_field = "exampleField"
    task_type         = "Map"

    connector_operator {
      s3 = "NO_OP"
    }
  }

  kms_arn = aws_kms_key.example.arn

  trigger_config {
    trigger_type = "OnDemand"
  }
}

Remediation

Terraform

Rule Details

Field	Value
ID	IAC-0311
Severity	LOW
IaC Type	Terraform
Frameworks	Terraform
Checkov ID	CKV_AWS_263

References

• Checkov Rule

---