Rule: S3 Bucket Cross-Region Replication should be enabled
This rule ensures enabling cross-region replication for S3 buckets.
| Rule | S3 bucket cross-region replication should be enabled |
| Framework | NIST Cybersecurity Framework (CSF) v1.1 |
| Severity | ✔ Critical |
Rule Description:
Enabling cross-region replication for S3 buckets is crucial for adhering to the NIST Cybersecurity Framework (CSF) version 1. This framework provides guidelines for managing and securing information systems to protect critical infrastructure and data. By enabling cross-region replication, organizations can ensure data redundancy, disaster recovery, and improved resilience against regional outages or failures.
Cross-region replication allows for automatic and asynchronous replication of objects in an S3 bucket to a destination bucket in a different AWS Region. In the event of a regional failure or outage, data can still be accessed and maintained in the replicated bucket, ensuring continuity of operations.
Troubleshooting Steps (if any):
If you encounter any issues while enabling cross-region replication for S3 buckets, follow these troubleshooting steps:
- 1.
Verify permissions: Ensure that the IAM user/role used to enable cross-region replication has the necessary permissions. The user/role should have permissions such as
,s3:GetBucketReplication
, ands3:ListBucket
to perform the required actions.s3:PutBucketReplication - 2.
Bucket versioning: Cross-region replication requires versioning to be enabled for both the source and destination buckets. Double-check that versioning is enabled for both buckets.
- 3.
Bucket ownership: Ensure that the IAM user/role used to enable cross-region replication has ownership of both the source and destination buckets. If the user/role doesn't have ownership, grant the necessary permissions to take ownership.
- 4.
AWS Region availability: Verify that the AWS Region where the destination bucket resides is in an operational state. It should not be experiencing any issues or downtime that may affect replication.
Necessary Codes (if any):
No specific codes are required for enabling cross-region replication for S3 buckets. The following steps describe the necessary configuration using AWS Management Console or AWS CLI.
Step-by-Step Guide for Remediation:
Follow the step-by-step guide to enable cross-region replication for S3 buckets:
- 1.
AWS Management Console:
a. Open the Amazon S3 console.
b. Select the source bucket for replication.
c. Go to the "Management" tab and click on "Replication."
d. Click on "Add rule" to create a new replication rule.
e. Configure the replication rule by selecting the destination bucket, storage class, and IAM role with appropriate permissions.
f. Enable replication by clicking on "Save."
g. Repeat the above steps for any additional buckets that require cross-region replication.
- 2.
AWS CLI:
a. Open the AWS CLI or terminal.
b. Use the following command to create a replication configuration for the source bucket:
aws s3api put-bucket-replication --bucket <source-bucket> --replication-configuration "{\"Rules\": [{\"Destination\": {\"Bucket\": \"arn:aws:s3:::<destination-bucket>\"}, \"Status\": \"Enabled\"}]}"c. Substitute
with the name of the source bucket and<source-bucket>
with the ARN of the destination bucket.<destination-bucket>d. Run the command to enable replication.
e. Repeat the above steps for any additional buckets that require cross-region replication.
By following these steps, you can successfully enable cross-region replication for S3 buckets, aligning with the NIST Cybersecurity Framework guidelines.