V-255363

Discussion

Failed attempts to change the permissions, privileges, and roles granted to users and roles must be tracked. Without an audit trail, unauthorized attempts to elevate or restrict privileges could go undetected. In an SQL environment, deleting permissions is typically done via the REVOKE or DENY command. To aid in diagnosis, it is necessary to keep track of failed attempts in addition to the successful ones.

Check Content

Review Azure SQL Database configuration to verify that audit records are produced when unsuccessful attempts to delete privileges/permissions occur.

To determine if an audit is configured, execute the following script. 
Run this TSQL command to determine if SQL Auditing AuditActionGroups are configured:
  SELECT DISTINCT sd.audit_action_name 
  FROM sys.database_audit_specification_details sd
  JOIN sys.database_audit_specifications s 
  ON s.database_specification_id = sd.database_specification_id
  WHERE (name = 'SqlDbAuditing_ServerAuditSpec' /*Server Audit*/
      OR name = 'SqlDbAuditing_AuditSpec') /*Database Audit*/
  AND s.is_state_enabled = 1
  ORDER BY sd.audit_action_name

If no values exist for AuditActionGroup, this is a finding. 

Verify the following AuditActionGroup(s) are configured:
DATABASE_OBJECT_OWNERSHIP_CHANGE_GROUP 
DATABASE_OBJECT_PERMISSION_CHANGE_GROUP 
DATABASE_OWNERSHIP_CHANGE_GROUP 
DATABASE_PERMISSION_CHANGE_GROUP 
DATABASE_ROLE_MEMBER_CHANGE_GROUP 
SCHEMA_OBJECT_OWNERSHIP_CHANGE_GROUP 
SCHEMA_OBJECT_PERMISSION_CHANGE_GROUP 

If any listed AuditActionGroups do not exist in the configuration, this is a finding.