AWS MemoryDB is not encrypted at rest by AWS' Key Management Service KMS using CMKs

Description

This policy identifies MemoryDB 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 MemoryDB data. It gives you full control over the encrypted data.

Fix - Runtime

TBD

Fix - Buildtime

Terraform

Resource: aws_memorydb_cluster
Arguments: kms_key_arn

resource "aws_memorydb_cluster" "pass" {
  acl_name                 = "open-access"
  name                     = "my-cluster"
  node_type                = "db.t4g.small"
  num_shards               = 2
  security_group_ids       = [aws_security_group.example.id]
  snapshot_retention_limit = 7
  subnet_group_name        = aws_memorydb_subnet_group.example.id
  kms_key_arn              = aws_kms_key.example.arn
}