SQS Queue Should Enforce Use CMK For Encryption

To remediate this misconfiguration, you need to enforce the use of Customer Managed Key (CMK) for encryption in AWS SQS. Here are the step-by-step instructions using AWS CLI:

Step 1: Install and Configure AWS CLI Before you begin, make sure you have AWS CLI installed on your machine. If not, you can download it from the official AWS CLI website. After installation, configure it with your AWS credentials.

Step 2: Identify the SQS Queue Identify the Amazon SQS queue that is not using a Customer Managed Key (CMK) for server-side encryption. You can list all your SQS queues using the following command:

aws sqs list-queues

Step 3: Create a CMK Create a Customer Managed Key (CMK) using AWS Key Management Service (KMS). To create a CMK, use the following command:

aws kms create-key --description "My CMK key"

Take note of the KeyId in the output as you will need it in the next step.

Step 4: Enable Server-Side Encryption Enable server-side encryption with the CMK for the identified SQS queue. Use the following command:

aws sqs set-queue-attributes --queue-url <your_queue_url> --attributes KmsMasterKeyId=<your_cmk_key_id>,KmsDataKeyReusePeriodSeconds=300

Replace <your_queue_url> with your SQS queue URL and <your_cmk_key_id> with the KeyId of the CMK you created.

After running the command, your SQS queue should now be using a CMK for server-side encryption. You can verify this by using the get-queue-attributes command:

aws sqs get-queue-attributes --queue-url <your_queue_url> --attribute-names KmsMasterKeyId

This should return the KeyId of the CMK you set for the queue. If it matches the KeyId of the CMK you created, then you have successfully remediated the misconfiguration.

To remediate this issue, you’ll need to create a Customer Master Key (CMK) in AWS Key Management Service (KMS) and then use this key to encrypt your SQS queue. Here is how you can do it using Python and AWS SDK Boto3:

1. First, install the necessary Python library, Boto3, if you haven’t already. You can do this using pip:

   pip install boto3
   

2. Import the boto3 library in your Python script:

   import boto3
   

3. Create a new CMK. To do this, you need to initialize the AWS KMS client and then call the create_key function:

   kms = boto3.client('kms')
   key = kms.create_key(Description='key for SQS encryption', 
                        KeyUsage='ENCRYPT_DECRYPT', 
                        CustomerMasterKeySpec='SYMMETRIC_DEFAULT')
   key_id = key['KeyMetadata']['KeyId']
   

4. Now, with the CMK created, you need to use this key to encrypt your SQS queue. First, initialize the SQS client:

   sqs = boto3.client('sqs')
   

5. Then, use the set_queue_attributes function to set the KMSMasterKeyId attribute to the ID of the CMK you created:

   sqs.set_queue_attributes(
       QueueUrl='URL_OF_YOUR_QUEUE',
       Attributes={
           'KmsMasterKeyId': key_id,
           'KmsDataKeyReusePeriodSeconds': '300'
       }
   )
   

   Replace ‘URL_OF_YOUR_QUEUE’ with the URL of your SQS queue.

6. Now your SQS queue is encrypted with the CMK.

Remember to replace the placeholders with your actual values. Also, ensure your AWS credentials are properly set up in your environment. You’ll need the necessary permissions to create keys and modify SQS queues.

These steps will encrypt all the new messages in the queue. If you want to encrypt the existing messages, you’ll need to re-send them to the queue.