cis-aws-database-6-2

name	cis-aws-database-6.2
description	Ensure Data at Rest and in Transit is Encrypted
category	cis-database
version	2.0.0
author	cyberstrike-official
tags	["cis","aws","database","memorydb","redis","encryption","kms","tls"]
cis_id	6.2
cis_benchmark	CIS AWS Database Services Benchmark v2.0.0
tech_stack	["aws"]
cwe_ids	[]
chains_with	["cis-aws-database-6.1","cis-aws-database-6.3","cis-aws-database-6.5"]
prerequisites	[]
severity_boost	{}

6.2 Ensure Data at Rest and in Transit is Encrypted (Manual)

Description

Ensure that encryption at rest and encryption in transit are both enabled for Amazon MemoryDB for Redis clusters to protect data confidentiality.

Rationale

Encrypting data at rest and in transit protects sensitive information from unauthorized access. Encryption at rest ensures stored data cannot be read even if underlying storage is compromised. Encryption in transit (TLS) protects data as it moves between clients and the MemoryDB cluster.

Impact

Enabling encryption may have a minor performance impact due to cryptographic operations. Applications must support TLS connections when encryption in transit is enabled.

Audit Procedure

Using AWS Console

1. Sign in to the AWS Management Console

   • Sign in to the AWS Management Console at https://console.aws.amazon.com/ with your AWS account credentials.

2. Open the Amazon MemoryDB Console

   • Navigate to the service using the Find Services search bar or by directly accessing the console at https://console.aws.amazon.com/memorydb/.

3. Select the Cluster

   • Choose the MemoryDB cluster for which you want to enable encryption at rest and in transit.
   • Click on the cluster name to access its details page.

4. Enable Encryption at Rest

   • In the cluster details page, navigate to the Encryption at Rest section.
   • Click on Modify to edit the encryption settings.
   • Select the desired encryption option:
     • AWS Managed Key (Default): Choose this option to use the default AWS managed key for encryption at rest. Amazon MemoryDB automatically encrypts your data using this key.
     • Customer Managed Key (CMK): Choose this option if you want to use your own AWS Key Management Service (KMS) customer-managed key for encryption. Select the appropriate CMK from the dropdown menu.
   • Click "Apply Changes" to enable encryption at rest for the MemoryDB cluster.

5. Enable Encryption in Transit

   • In the cluster details page, navigate to the Encryption in Transit section.
   • Click on Modify to edit the encryption settings.
   • Select the desired encryption option:
     • Encryption in Transit Enabled: Choose this option to enable encryption in transit for data transmitted between your client applications and MemoryDB. MemoryDB uses SSL/TLS encryption to secure the communication channel.