Ensure 'Control Server' permission is not granted

AltaNivel 1Revisión manualmssql

Descripción

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.

Cómo se verifica

Método de auditoría: Revisión manual

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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 ' + ...

Cómo se corrige

Método de corrección: Guía o parche de infraestructura

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

Propiedades

Sistemas operativos: Cualquiera
Etiquetas: mssqldatabasemanual
Referencia: CIS Microsoft SQL Server 2025 Benchmark v1.0.0 - 3.14 Ensure 'Control Server' permission is not granted