Ensure 'Control Server' permission is not granted

ÉlevéeNiveau 1Revue manuellemssql

Description

The Control Server permission is a highly privileged server-level permission in SQL Server database engine. Moreover, even though this permission is not as powerful as SYSADMIN role, it has almost most of the permissions of SYSADMIN role. Also, database logins granted control server permission can easily elevate to SYSADMIN role through different exploit techniques which is a serious security problem.

Méthode de vérification

Méthode d'audit: Revue manuelle

Cette recommandation ne peut pas être vérifiée automatiquement. Une analyse la liste avec ces instructions lorsque vous passez --include-manual.

Execute this SQL query to list all SQL Server logins with Control Server permission: SELECT sys.server_permissions.type, sys.server_permissions.permission_name, sys.server_permissions.state, sys.server_permissions.state_desc, granteeserverprincipal.name AS grantee_principal_name, granteeserverprincipal.type_desc AS grantee_principal_type_desc, grantorserverprinicipal.name AS grantor_name, CASE WHEN sys.server_permissions.state = N'W' THEN N'GRANT' ELSE sys.server_permissions.state_desc END + N' ' + sys.server_permissions.permission_name COLLATE SQL_Latin1_General_CP1_CI_AS + N' TO ' + ...

Méthode de correction

Méthode de correction: Recommandation ou correctif d'infrastructure

Remove any un-allowed SQL Server accounts which are granted Control Server using this query: use [master] GO REVOKE CONTROL SERVER FROM [%login%]

Propriétés

Systèmes d'exploitation: Tous
Étiquettes: mssqldatabasemanual
Référence: CIS Microsoft SQL Server 2025 Benchmark v1.0.0 - 3.14 Ensure 'Control Server' permission is not granted