Title

Application object owner accounts should be disabled when not performing installation or maintenance actions. (Cat II impact)

Discussion

Object ownership provides all database object permissions to the owned object. Access to the application object owner accounts requires special protection to prevent unauthorized access and use of the object ownership privileges. In addition to the high privileges to application objects assigned to this account, it is also an account that, by definition, is not accessed interactively except for application installation and maintenance. This reduced access to the account means that unauthorized access to the account could go undetected. To help protect the account, it should be enabled only when access is required.

Check Content

Review list of non-default, non-DBA and non-developer object owners: From the query prompt: SELECT name AS [Database Name] FROM [master].sys.databases WHERE state = 0 Repeat for each database: From the query prompt: USE [Database Name] SELECT DISTINCT s.name AS [Schema], l.name AS [User] FROM sys.all_objects o JOIN sys.schemas s ON o.schema_id = s.schema_id JOIN sys.database_principals u ON s.principal_id = u.principal_id JOIN master.sys.sql_logins l ON u.sid = l.sid WHERE o.is_ms_shipped = 0 AND l.is_disabled = 0 If any login names are returned (not disabled) from the last part of the query, this is a Finding. Note: The 'sa' account is not exempt from this requirement and should be disabled. DBA and developer accounts authorized to own objects in the database may be permitted, but must be documented.

Fix Text

Disable logins for all application object owner accounts or members of database roles that own objects: ALTER LOGIN [name] DISABLE Document application object owner accounts that are not disabled in the System Security Plan and authorize with the IAO.

Additional Identifiers

Rule ID: SV-24066r2_rule

Vulnerability ID: V-5683

Group Title:

Expert Comments

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