SQL Server must be able to generate audit records when security objects are accessed.

From MS SQL Server 2016 Instance Security Technical Implementation Guide

Part of SRG-APP-000492-DB-000332

Associated with: CCI-000172

SV-93957r1_rule SQL Server must be able to generate audit records when security objects are accessed.

Vulnerability discussion

Changes to the security configuration must be tracked. This requirement applies to situations where security data is retrieved or modified via data manipulation operations, as opposed to via specialized security functionality. In an SQL environment, types of access include, but are not necessarily limited to: SELECT INSERT UPDATE DELETE EXECUTE

Check content

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_statu If no records are returned, this is a finding. If the auditing the retrieval of privilege/permission/role membership information is required, execute the following query to verify the SCHEMA_OBJECT_ACCESS_GROUP is 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 = 'SCHEMA_OBJECT_ACCESS_GROUP' If the "SCHEMA_OBJECT_ACCESS_GROUP" is not returned in an active audit, this is a finding.

Fix text

Deploy an audit to audit the retrieval of privilege/permission/role membership information. See the supplemental file "SQL 2016 Audit.sql".

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