lacework-global-139
Ensure the bucket ACL does not grant AWS users FULL_CONTROL [READ, WRITE, READ_ACP, WRITE_ACP]
Description
The S3 bucket ACL gives any authenticated AWS user total control of the bucket and the bucket ACL. It is best practice to restrict FULL_CONTROL.
Note: S3 buckets created with the default/recommended AWS settings have ACLs disabled and will therefore be compliant with this policy.
Remediation
Perform the following to revoke FULL_CONTROL for all AWS users:
Sign in to the AWS Management Console
Select Services
Select S3
Select the bucket to change
Navigate to Permissions
Navigate to Access Control List and select Edit
Against Authenticated users group (anyone with an AWS account), uncheck 'List' and 'Write' under Objects, and 'Read' and 'Write' under Bucket ACL
Select Save changes
Repeat steps 4-8 for each bucket requiring updated permissions