To enhance AWS cloud security audits, it is important to ensure that the S3 buckets associated with your CloudTrail trails (i.e. target buckets) are configured to use the S3 Server Access Logging feature. Since the CloudTrail buckets contain sensitive information, they should be protected from unauthorized access. Enabling server access logging allows you to track any requests made to access the target buckets. This helps in identifying any unauthorized access attempts and investigating any potential security breaches. Furthermore, server access logging can also be used to limit who can alter or delete the access logs. This helps in preventing a user from covering their tracks, which can be useful in maintaining the integrity of the audit trail.
Here are the remediation steps to ensure that the S3 buckets associated with CloudTrail trails are configured with server access logging:
Once you have enabled server access logging, you can review the logs to track access to the CloudTrail logs stored in the target bucket. This allows you to monitor who has accessed the data and identify any unauthorized access attempts. Additionally, you can limit who can alter or delete the access logs to prevent tampering and maintain the integrity of the audit trail.