|Finding ID||Version||Rule ID||IA Controls||Severity|
|SQL Server's [sa] account has special privileges required to administer the database. The [sa] account is a well-known SQL Server account and is likely to be targeted by attackers and thus more prone to providing unauthorized access to the database. This [sa] default account is administrative and could lead to catastrophic consequences, including the complete loss of control over SQL Server. If the [sa] default account is not disabled, an attacker might be able to gain access through the account. SQL Server by default, at installation, disables the [sa] account. Some applications that run on SQL Server require the [sa] account to be enabled in order for the application to function properly. These applications that require the [sa] account to be enabled are usually legacy systems.|
|MS SQL Server 2016 Instance Security Technical Implementation Guide||2020-12-16|
|Check Text ( C-15245r313867_chk )|
| Check SQL Server settings to determine if the [sa] (system administrator) account has been disabled by executing the following query: |
SELECT name, is_disabled
WHERE principal_id = 1;
Verify that the "name" column contains the current name of the [sa] database server account.
If the "is_disabled" column is not set to “1”, this is a finding.
|Fix Text (F-15243r313868_fix)|
| Modify the enabled flag of SQL Server's [sa] (system administrator) account by running the following script. |
ALTER LOGIN [sa] DISABLE;