TMA-MSSQL-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. Both value and value_in_use must equal 0. Default: By default, this option is disabled (0). Runs one sqlcmd query with its defaults (Windows authentication to the local default instance); set SQLCMDSERVER, SQLCMDUSER and SQLCMDPASSWORD for another instance or SQL authentication. Needs VIEW SERVER STATE / sysadmin-level read access.
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: Sentencia SQL
shell
sqlcmd -b -h -1 -W -Q "SET NOCOUNT ON; EXEC sp_configure 'show advanced options', 1; RECONFIGURE; EXEC sp_configure 'cross db ownership chaining', 0; RECONFIGURE; EXEC sp_configure 'show advanced options', 0; RECONFIGURE;"Propiedades
- Sistemas operativos
- Cualquiera
- Etiquetas
- mssqldatabasesurface-area
- Referencia
- CIS Microsoft SQL Server 2025 Benchmark v1.0.0 - 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