fix(cloudfront): Incorrect bucket name retrievement (#6947)

(cherry picked from commit ed5a0ae45a)

prowler/providers/aws/services/cloudfront/cloudfront_distributions_s3_origin_non_existent_bucket/cloudfront_distributions_s3_origin_non_existent_bucket.py

@@ -16,7 +16,7 @@ class cloudfront_distributions_s3_origin_non_existent_bucket(Check):
 
             for origin in distribution.origins:
                 if origin.s3_origin_config:
-                    bucket_name = origin.domain_name.split(".")[0]
+                    bucket_name = origin.domain_name.split(".s3")[0]
                     if not s3_client._head_bucket(bucket_name):
                         non_existent_buckets.append(bucket_name)
 

prowler/providers/aws/services/s3/s3_service.py

@@ -496,6 +496,7 @@ class S3(AWSService):
                 )
                 return False
             else:
+                # Bucket exists but we don't have access to it
                 logger.error(
                     f"{error.__class__.__name__}[{error.__traceback__.tb_lineno}]: {error}"
                 )