TMA-MSSQL2022-2.3

Ensure 'Cross DB Ownership Chaining' Server Configuration Option is set to '0'

MediaNivel 1Automatizadamssql

Descripción

The cross db ownership chaining option controls cross-database ownership chaining across all databases at the instance (or server) level. When enabled, this option allows a member of the db_owner role in a database to gain access to objects owned by a login in any other database, causing an unnecessary information disclosure. When required, cross-database ownership chaining should only be enabled for the specific databases requiring it instead of at the instance level for all databases by using the ALTER DATABASE<database_name>SET DB_CHAINING ON command. This database option may not be changed on the master, model, or tempdb system databases.

Cómo se verifica

Método de auditoría: Consulta SQL

sql_query

sqlcmd -b -h -1 -W -Q "SET NOCOUNT ON; SELECT CASE WHEN CAST(value AS int) = 0 AND CAST(value_in_use AS int) = 0 THEN 'compliant' ELSE 'noncompliant' END FROM sys.configurations WHERE name = 'cross db ownership chaining';"

Salida esperada: compliant

Cómo se corrige

Método de corrección: Guía o parche de infraestructura

For AWS RDS Instances, please refer to the documentation for using Parameter Groups here: Working with parameter groups Run the following T-SQL command: EXECUTE sp_configure 'cross db ownership chaining', 0; RECONFIGURE; GO

Propiedades

Sistemas operativos: Cualquiera
Etiquetas: mssqlsqlserver-2022
Referencia: CIS Microsoft SQL Server 2022 Benchmark v1.3.0 - 2.3 Ensure 'Cross DB Ownership Chaining' Server Configuration Option is set to '0'

Verificar este host

Ejecute esto en un equipo que tenga permiso para auditar. El escaneo es de solo lectura.

shell

tmaegis scan --target mssql