This rule ensures that S3 public access is blocked at both account and bucket levels.
Rule | S3 public access should be blocked at account and bucket levels |
Framework | HIPAA |
Severity | ✔ Medium |
Rule Description
This rule is designed to ensure that public access to Amazon S3 buckets within an AWS account is blocked, specifically for organizations that must comply with the Health Insurance Portability and Accountability Act (HIPAA). By blocking public access at both the account and bucket levels, it helps protect sensitive data and prevents accidental exposure.
Troubleshooting Steps
If you encounter any issues or unexpected behavior while implementing this rule, follow these troubleshooting steps:
Double-check the bucket-level permissions: Make sure that the bucket access permissions are properly set to block public access. Verify that the bucket policy and access control list (ACL) settings are correctly configured.
Review account-level settings: Verify that the account-level settings are enabled to block public access. Check that the AWS Organizations service control policies (SCPs) or account settings are correctly applied and not conflicting with the bucket-level permissions.
Check the bucket policies: Examine any existing bucket policies to ensure they don't allow public access. Review the policy statements and confirm that they only grant necessary access to authorized users or services.
Use the AWS S3 Block Public Access features: Make use of the available AWS S3 Block Public Access features to enforce public access blocking. Ensure that you have properly configured these settings and enabled all necessary features.
Audit and monitor access logs: Regularly review the access logs and CloudTrail logs to identify any attempts or instances of forbidden public access. This allows you to troubleshoot and address any potential security vulnerabilities.
Necessary Codes
In order to block public access at the account and bucket levels, the following code snippets can be used as a reference:
Account-level Block Public Access Settings (via AWS CLI):
aws s3control put-public-access-block --account-id YOUR_AWS_ACCOUNT_ID --public-access-block-configuration "BlockPublicAcls=true, IgnorePublicAcls=true, BlockPublicPolicy=true, RestrictPublicBuckets=true"
Bucket-level Block Public Access Settings (via AWS CLI):
aws s3api put-public-access-block --bucket YOUR_BUCKET_NAME --public-access-block-configuration "BlockPublicAcls=true, IgnorePublicAcls=true, BlockPublicPolicy=true, RestrictPublicBuckets=true"
Step-by-Step Guide for Remediation
Here is a step-by-step guide to implement the rule and block S3 public access at the account and bucket levels:
Account-level Configuration:
Bucket-level Configuration:
Validation:
By following these steps, you can effectively block public access to the S3 buckets within your AWS account, maintaining HIPAA compliance and safeguarding sensitive data.