Rule: All S3 Buckets Should Log S3 Data Events in CloudTrail
This rule ensures that all S3 buckets are logging S3 data events in CloudTrail.
| Rule | All S3 buckets should log S3 data events in CloudTrail |
| Framework | NIST 800-53 Revision 5 |
| Severity | ✔ Medium |
Rule Description
All S3 buckets should have CloudTrail logging enabled to capture and record S3 data events. This rule ensures compliance with the security requirements outlined in the National Institute of Standards and Technology (NIST) Special Publication 800-53 Revision 5.
Enabling CloudTrail logging for S3 buckets allows organizations to track and monitor various data-related activities, such as object-level access, modifications, and deletions, which aids in incident response, forensics, and compliance efforts.
Troubleshooting Steps
If S3 buckets are not logging data events in CloudTrail, the following troubleshooting steps can be undertaken:
- 1.
Check CloudTrail Configuration: Verify that CloudTrail is properly configured to capture S3 data events. Ensure that the associated S3 buckets are added to the CloudTrail configuration and that the desired logging options are enabled.
- 2.
Verify S3 Bucket Permissions: Confirm that the S3 bucket permissions are correctly set to allow CloudTrail to write logs. Ensure that the appropriate IAM policies are applied to grant CloudTrail the necessary permissions to write logs to the specified bucket.
- 3.
Validate S3 Bucket Policy: Check the bucket policy associated with the S3 bucket and ensure it does not restrict CloudTrail logging. Verify that the policy allows CloudTrail to write logs to the bucket without any conflicting permission configurations.
- 4.
Review CloudTrail and S3 Bucket Interactions: Examine the CloudTrail and S3 bucket interaction logs to identify any potential issues or errors. Look for any log entries that indicate failures or exceptions related to capturing and recording S3 data events.
Necessary Code
The necessary code is not applicable for this rule/policy.
Step-by-Step Guide for Remediation
To enable CloudTrail logging for S3 buckets and comply with the NIST 800-53 Revision 5 requirements, follow the step-by-step guide below:
- 1.
Access the AWS Management Console: Log in to the AWS Management Console using your credentials.
- 2.
Navigate to the CloudTrail service: Search for and select the "CloudTrail" service.
- 3.
Choose your CloudTrail trail: From the CloudTrail dashboard, select the appropriate CloudTrail trail that needs to capture S3 data events.
- 4.
Click on "Edit": Within the trail settings, click on the "Edit" button.
- 5.
Configure Data event settings: In the "Data events" section, ensure the following options are selected:
- "S3 - Object-level operations": Enable this option to capture S3 object-level data events.
- "Read/Write events": Enable this option to capture read and write events on objects in S3 buckets.
- "Management events": Enable this option to capture S3 bucket management events.
- "Global services": Determine if you want to capture global service events associated with S3 operations.
- 6.
Choose the appropriate S3 bucket: Under the "Data events" section, click on the "Select bucket" button and choose the S3 bucket where you want to store the CloudTrail logs.
- 7.
Review advanced settings: If required, review the advanced settings related to S3 data events and make necessary changes based on your specific requirements.
- 8.
Click on "Save" or "Apply": Once all the settings are configured correctly, save the changes by clicking on the "Save" or "Apply" button.
- 9.
Validate the configuration: Verify that the CloudTrail trail is now properly configured to capture S3 data events. Check if the logged events in the designated S3 bucket correspond to the desired data activities.
By following these steps, you can ensure that CloudTrail logging is enabled for S3 buckets and meets the compliance requirements of NIST 800-53 Revision 5.