TMA-MSSQL2022-2.3

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

СреднийУровень 1Автоматическаяmssql

Описание

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.

Как проверяется

Метод проверки: SQL-запрос

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';"

Ожидаемый вывод: compliant

Как исправляется

Метод исправления: Рекомендация или патч инфраструктуры

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

Свойства

Операционные системы: Любая
Теги: mssqlsqlserver-2022
Источник: CIS Microsoft SQL Server 2022 Benchmark v1.3.0 - 2.3 Ensure 'Cross DB Ownership Chaining' Server Configuration Option is set to '0'

Проверить этот хост

Выполните команду на компьютере, аудит которого вам разрешён. Сканирование работает только на чтение.

shell

tmaegis scan --target mssql