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Enable KMS CMK Rotation Rule

This rule ensures the rotation of KMS Customer Master Keys for enhanced security.

RuleKMS CMK rotation should be enabled
FrameworkNIST 800-53 Revision 5
Severity
Critical

KMS CMK Rotation for NIST 800-53 Revision 5

Rule Description

KMS (Key Management Service) CMK (Customer Master Key) rotation should be enabled in compliance with NIST (National Institute of Standards and Technology) 800-53 Revision 5. This rule ensures the regular rotation of encryption keys used within the AWS Key Management Service, enhancing the security of cryptographic operations.

Troubleshooting Steps

If KMS CMK rotation is not enabled or encountering issues, the following troubleshooting steps can be performed:

  1. 1.

    Verify IAM (Identity and Access Management) permissions: Ensure that the IAM user or role has the necessary permissions to manage KMS keys and enable rotation.

  2. 2.

    Check KMS key usage policies: Make sure that the KMS key usage policies allow the IAM user or role to enable CMK rotation.

  3. 3.

    Confirm AWS region support: Check if the AWS region where the KMS key is created supports CMK rotation. Not all AWS regions support this feature, so consider creating a new KMS key in a compatible region if necessary.

Necessary Codes

No specific codes are required for this rule. However, the following AWS CLI commands can be used for enabling CMK rotation:

  1. 1.

    To enable rotation for a KMS CMK:

    aws kms enable-key-rotation --key-id <key-id>

  2. 2.

    To check the rotation status of a KMS CMK:

    aws kms get-key-rotation-status --key-id <key-id>

Replace

<key-id>
with the ID or ARN (Amazon Resource Name) of the KMS CMK that requires rotation.

Step-by-Step Guide for Remediation

Follow the step-by-step guide below to enable KMS CMK rotation for NIST 800-53 Revision 5 compliance:

  1. 1.

    Identify the KMS CMK that needs rotation.

  2. 2.

    Open the AWS Command Line Interface (CLI) or an AWS management console.

  3. 3.

    If using the CLI, authenticate with your AWS account credentials.

  4. 4.

    Check the rotation status of the KMS CMK by running the following command:

    aws kms get-key-rotation-status --key-id <key-id>

  5. 5.

    If the rotation status is "Disabled," proceed to the next step. Otherwise, rotation is already enabled.

  6. 6.

    Enable rotation for the KMS CMK by executing the following command:

    aws kms enable-key-rotation --key-id <key-id>

  7. 7.

    Verify that CMK rotation has been successfully enabled by running the rotation status check command again:

    aws kms get-key-rotation-status --key-id <key-id>

  8. 8.

    If the rotation status is now "Enabled," the KMS CMK rotation has been successfully enabled.

By following these steps, you will enable KMS CMK rotation for NIST 800-53 Revision 5 compliance and increase the overall security of your AWS Key Management Service.

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