DisableKey
Event Information
- The DisableKey event in AWS Key Management Service (KMS) refers to the action of disabling a customer master key (CMK) in KMS.
- When a DisableKey event occurs, it means that the CMK is no longer available for use in cryptographic operations, such as encrypting or decrypting data.
- Disabling a key is a security measure that can be taken to prevent unauthorized access or usage of the key, while still retaining the key material and associated metadata for potential future use.
Examples
-
Data confidentiality: Disabling a key in AWS Key Management Service (KMS) can impact security by potentially exposing sensitive data. If a key is disabled, any encrypted data protected by that key will become inaccessible, potentially leading to data breaches or unauthorized access.
-
Data integrity: Disabling a key in AWS KMS can also impact data integrity. If a key is disabled, any attempts to decrypt data encrypted with that key will fail, potentially leading to data corruption or loss of data integrity.
-
Compliance requirements: Disabling a key in AWS KMS can impact compliance with security standards and regulations. Many compliance frameworks require the use of encryption to protect sensitive data, and disabling a key can result in non-compliance and potential penalties or legal consequences.
Remediation
Using Console
-
Identify the affected AWS KMS key:
- Log in to the AWS Management Console.
- Go to the AWS Key Management Service (KMS) console.
- Navigate to the “Customer managed keys” section.
- Look for the key mentioned in the previous response.
-
Update key policy to restrict access:
- Select the key from the list.
- Click on the “Key policy” tab.
- Review the existing key policy and identify the necessary changes based on the examples provided.
- Click on the “Edit” button to modify the key policy.
- Make the required changes to restrict access to the key.
- Click on the “Save changes” button to apply the updated key policy.
-
Monitor and review key usage:
- Enable AWS CloudTrail if not already enabled.
- Go to the AWS CloudTrail console.
- Select the appropriate trail or create a new one.
- Configure the trail to capture KMS key-related events.
- Set up appropriate notifications or alerts for any suspicious or unauthorized key usage.
- Regularly review the CloudTrail logs to monitor key usage and detect any potential security issues.
Note: The above steps are general guidelines and may vary based on the specific requirements and configurations of your AWS account. It is recommended to refer to the official AWS documentation for detailed instructions and best practices.
Using CLI
To remediate issues related to AWS Key Management Service (KMS) using AWS CLI, you can follow these steps:
-
Rotate KMS keys:
- Identify the KMS key(s) that need to be rotated.
- Generate a new key using the
create-key
command:aws kms create-key
. - Update the necessary resources to use the new key.
- Schedule the deletion of the old key using the
schedule-key-deletion
command:aws kms schedule-key-deletion --key-id <old-key-id> --pending-window-in-days <number-of-days>
. - Monitor the key rotation process and ensure that all resources are successfully using the new key.
-
Enable KMS key rotation:
- Check if key rotation is already enabled for a specific KMS key using the
get-key-rotation-status
command:aws kms get-key-rotation-status --key-id <key-id>
. - If key rotation is not enabled, enable it using the
enable-key-rotation
command:aws kms enable-key-rotation --key-id <key-id>
.
- Check if key rotation is already enabled for a specific KMS key using the
-
Monitor KMS key usage:
- Enable CloudTrail logging for KMS API calls to monitor key usage and detect any suspicious activities.
- Use CloudWatch Logs to create alarms and notifications for specific KMS API events.
- Regularly review CloudTrail logs and CloudWatch metrics to identify any unauthorized or unusual key usage patterns.
Please note that the actual CLI commands may vary depending on your specific requirements and the AWS CLI version you are using.
Using Python
To remediate the issues related to AWS KMS using Python, you can follow these steps:
- Enable AWS CloudTrail for KMS:
- Use the
boto3
library to create a new CloudTrail trail for KMS. - Set the appropriate parameters such as the S3 bucket to store the logs and the KMS key to encrypt the logs.
- Enable logging for KMS API events by specifying the appropriate event selectors.
- Use the
- Enable AWS Config for KMS:
- Use the
boto3
library to create a new AWS Config rule for KMS. - Specify the rule parameters such as the required KMS key tags and the desired compliance level.
- Use the
- Enable AWS Security Hub for KMS:
- Use the
boto3
library to enable AWS Security Hub for KMS. - Specify the appropriate product ARN for KMS.
- Use the
Please note that you need to have the necessary permissions and credentials set up to execute these scripts successfully.