Metadata

Id: a2f548f2-188c-4fff-b172-e9a6acb216bd

Cloud Provider: aws

Framework: Terraform

Severity: Medium

Category: Encryption

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• Provider Reference

Description

By default, AWS Secrets Manager encrypts secrets using the default AWS-managed key, which may not provide the desired level of control over key rotation, access policies, or auditability. Without explicitly specifying a kms_key_id in your Terraform resource, as shown below, secrets will not use a customer-managed AWS KMS key (CMK) for encryption:

resource "aws_secretsmanager_secret" "example" {
  name = "example"
}

This misconfiguration can increase the exposure of sensitive data and limit your ability to implement strict access controls. To reduce risk, explicitly provide a kms_key_id attribute referencing a CMK:

resource "aws_secretsmanager_secret" "example" {
  name       = "example"
  kms_key_id = "arn:aws:kms:us-west-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab"
}

Compliant Code Examples

resource "aws_secretsmanager_secret" "example" {
  name = "example"
  kms_key_id = "arn:aws:kms:us-west-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab"
}

Non-Compliant Code Examples

resource "aws_secretsmanager_secret" "example" {
  name = "example"
}