SQL Server default account [sa] must have its name changed.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-79319	SQL6-D0-016300	SV-94025r1_rule		Medium

Description
SQL Server's [sa] account has special privileges required to administer the database. The [sa] account is a well-known SQL Server account name and is likely to be targeted by attackers, and is thus more prone to providing unauthorized access to the database. Since the SQL Server [sa] is administrative in nature, the compromise of a default account can have catastrophic consequences, including the complete loss of control over SQL Server. Since SQL Server needs for this account to exist and it should not be removed, one way to mitigate this risk is to change the [sa] account name.

Description

SQL Server's [sa] account has special privileges required to administer the database. The [sa] account is a well-known SQL Server account name and is likely to be targeted by attackers, and is thus more prone to providing unauthorized access to the database. Since the SQL Server [sa] is administrative in nature, the compromise of a default account can have catastrophic consequences, including the complete loss of control over SQL Server. Since SQL Server needs for this account to exist and it should not be removed, one way to mitigate this risk is to change the [sa] account name.

STIG	Date
MS SQL Server 2016 Instance Security Technical Implementation Guide	2018-03-09

Details

Check Text ( C-78911r1_chk )
Verify the SQL Server default [sa] (system administrator) account name has been changed by executing the following query: USE master; GO SELECT * FROM sys.sql_logins WHERE [name] = 'sa' OR [principal_id] = 1; GO If the login account name "SA" or "sa" appears in the query output, this is a finding.

Fix Text (F-86071r1_fix)
Modify the SQL Server's [sa] (system administrator) account by running the following script: USE master; GO ALTER LOGIN [sa] WITH NAME = GO