Ensure AWS App Flow flow uses Customer Managed Keys (CMKs)

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

Bridgecrew Policy ID: BC_AWS_GENERAL_176
Checkov Check ID: CKV_AWS_263
Severity: LOW

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.

Fix - Runtime

TBD

Fix - Buildtime

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"
  }
}

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