SQL Server must generate audit records when successful and unsuccessful logons or connection attempts occur.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-214014	SQL6-D0-014800	SV-214014r903003_rule		Medium

Description
For completeness of forensic analysis, it is necessary to track who/what (a user or other principal) logs on to SQL Server. It is also necessary to track failed attempts to log on to SQL Server. While positive identification may not be possible in a case of failed authentication, as much information as possible about the incident must be captured. Satisfies: SRG-APP-000503-DB-000350

STIG	Date
MS SQL Server 2016 Instance Security Technical Implementation Guide	2023-06-01

Details

Check Text ( C-15231r903001_chk )
Determine if an audit is configured and started by executing the following query: SELECT name AS 'Audit Name', status_desc AS 'Audit Status', audit_file_path AS 'Current Audit File' FROM sys.dm_server_audit_status Execute the following query to verify the SUCCESSFUL_LOGIN_GROUP and FAILED_LOGIN_GROUP are included in the server audit specification. SELECT a.name AS 'AuditName', s.name AS 'SpecName', d.audit_action_name AS 'ActionName', d.audited_result AS 'Result' FROM sys.server_audit_specifications s JOIN sys.server_audits a ON s.audit_guid = a.audit_guid JOIN sys.server_audit_specification_details d ON s.server_specification_id = d.server_specification_id WHERE a.is_state_enabled = 1 AND d.audit_action_name IN ('SUCCESSFUL_LOGIN_GROUP', 'FAILED_LOGIN_GROUP') If both "SUCCESSFUL_LOGIN_GROUP" and "FAILED_LOGIN_GROUP" are returned in an active audit, this is not a finding. If both "SUCCESSFUL_LOGIN_GROUP" and "FAILED_LOGIN_GROUP" are not in the active audit, determine whether "Both failed and successful logins" is enabled. In SQL Management Studio Right-click on the instance >> Select "Properties" >> Select "Security" on the left hand side >> Check the setting for "Login auditing" If "Both failed and successful logins" is not selected, this is a finding.

Check Text ( C-15231r903001_chk )

Determine if an audit is configured and started by executing the following query:

SELECT name AS 'Audit Name',
status_desc AS 'Audit Status',
audit_file_path AS 'Current Audit File'
FROM sys.dm_server_audit_status

Execute the following query to verify the SUCCESSFUL_LOGIN_GROUP and FAILED_LOGIN_GROUP are included in the server audit specification.

SELECT a.name AS 'AuditName',
s.name AS 'SpecName',
d.audit_action_name AS 'ActionName',
d.audited_result AS 'Result'
FROM sys.server_audit_specifications s
JOIN sys.server_audits a ON s.audit_guid = a.audit_guid
JOIN sys.server_audit_specification_details d ON s.server_specification_id = d.server_specification_id
WHERE a.is_state_enabled = 1 AND d.audit_action_name IN ('SUCCESSFUL_LOGIN_GROUP', 'FAILED_LOGIN_GROUP')

If both "SUCCESSFUL_LOGIN_GROUP" and "FAILED_LOGIN_GROUP" are returned in an active audit, this is not a finding.

If both "SUCCESSFUL_LOGIN_GROUP" and "FAILED_LOGIN_GROUP" are not in the active audit, determine whether "Both failed and successful logins" is enabled.

In SQL Management Studio
Right-click on the instance
>> Select "Properties"
>> Select "Security" on the left hand side
>> Check the setting for "Login auditing"

If "Both failed and successful logins" is not selected, this is a finding.

Fix Text (F-15229r903002_fix)
Add both "SUCCESSFUL_LOGIN_GROUP" and "FAILED_LOGIN_GROUP" to the server audit specification. USE [master]; GO ALTER SERVER AUDIT SPECIFICATION STIG_AUDIT_SERVER_SPECIFICATION WITH (STATE = OFF); GO ALTER SERVER AUDIT SPECIFICATION STIG_AUDIT_SERVER_SPECIFICATION ADD (SUCCESSFUL_LOGIN_GROUP); GO ALTER SERVER AUDIT SPECIFICATION STIG_AUDIT_SERVER_SPECIFICATION ADD (FAILED_LOGIN_GROUP); GO ALTER SERVER AUDIT SPECIFICATION STIG_AUDIT_SERVER_SPECIFICATION WITH (STATE = ON); GO Alternatively, enable "Both failed and successful logins". In SQL Management Studio: Right-click on the instance. - Select "Properties". - Select "Security" on the left-hand side. - Select "Both failed and successful logins". - Click "OK".

Fix Text (F-15229r903002_fix)

Add both "SUCCESSFUL_LOGIN_GROUP" and "FAILED_LOGIN_GROUP" to the server audit specification.
USE [master];
GO

ALTER SERVER AUDIT SPECIFICATION STIG_AUDIT_SERVER_SPECIFICATION WITH (STATE = OFF);
GO

ALTER SERVER AUDIT SPECIFICATION STIG_AUDIT_SERVER_SPECIFICATION ADD (SUCCESSFUL_LOGIN_GROUP);
GO

ALTER SERVER AUDIT SPECIFICATION STIG_AUDIT_SERVER_SPECIFICATION ADD (FAILED_LOGIN_GROUP);
GO

ALTER SERVER AUDIT SPECIFICATION STIG_AUDIT_SERVER_SPECIFICATION WITH (STATE = ON);
GO

Alternatively, enable "Both failed and successful logins".

In SQL Management Studio:
Right-click on the instance.
- Select "Properties".
- Select "Security" on the left-hand side.
- Select "Both failed and successful logins".
- Click "OK".