Database objects (including but not limited to tables, indexes, storage, stored procedures, functions, triggers, links to software external to Azure SQL Database, etc.) must be owned by database/Azure SQL Database principals authorized for ownership.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-255306	ASQL-00-001300	SV-255306r879586_rule		Medium

Description
Within the database, object ownership implies full privileges to the owned object, including the privilege to assign access to the owned objects to other subjects. Database functions and procedures can be coded using definer's rights. This allows anyone who utilizes the object to perform the actions if they were the owner. If not properly managed, this can lead to privileged actions being taken by unauthorized individuals.

Description

Within the database, object ownership implies full privileges to the owned object, including the privilege to assign access to the owned objects to other subjects. Database functions and procedures can be coded using definer's rights. This allows anyone who utilizes the object to perform the actions if they were the owner. If not properly managed, this can lead to privileged actions being taken by unauthorized individuals.

STIG	Date
Microsoft Azure SQL Database Security Technical Implementation Guide	2023-06-12

Details

Check Text ( C-58979r871042_chk )
Review system documentation to identify Azure SQL Database accounts authorized to own database objects. If the Azure SQL Database ownership list does not exist or needs to be updated, this is a finding. The following query can be of use in making this determination: ;with objects_cte as (SELECT o.name, o.type_desc, CASE WHEN o.principal_id is null then s.principal_id ELSE o.principal_id END as principal_id FROM sys.objects o INNER JOIN sys.schemas s ON o.schema_id = s.schema_id WHERE o.is_ms_shipped = 0 ) SELECT cte.name, cte.type_desc, dp.name as ObjectOwner FROM objects_cte cte INNER JOIN sys.database_principals dp ON cte.principal_id = dp.principal_id ORDER BY dp.name, cte.name If any of the listed owners is not authorized, this is a finding.

Check Text ( C-58979r871042_chk )

Review system documentation to identify Azure SQL Database accounts authorized to own database objects.

If the Azure SQL Database ownership list does not exist or needs to be updated, this is a finding.

The following query can be of use in making this determination:

;with objects_cte as
(SELECT o.name, o.type_desc,
CASE
WHEN o.principal_id is null then s.principal_id
ELSE o.principal_id
END as principal_id
FROM sys.objects o
INNER JOIN sys.schemas s
ON o.schema_id = s.schema_id
WHERE o.is_ms_shipped = 0
)
SELECT cte.name, cte.type_desc, dp.name as ObjectOwner
FROM objects_cte cte
INNER JOIN sys.database_principals dp
ON cte.principal_id = dp.principal_id
ORDER BY dp.name, cte.name

If any of the listed owners is not authorized, this is a finding.

Fix Text (F-58923r871043_fix)
Document and obtain approval for any account(s) authorized for object ownership. If necessary, use the ALTER AUTHORIZATION command to change object ownership to an authorized account. Example provided below. ALTER AUTHORIZATION ON OBJECT::test.table TO AuthorizedUser; https://docs.microsoft.com/en-us/sql/t-sql/statements/alter-authorization-transact-sql