TMA-MSSQL-2.9

Ensure 'Trustworthy' Database Property is set to 'Off'

HighLevel 1Automatedmssql

Description

The TRUSTWORTHY database option allows database objects to access objects in other databases under certain circumstances. Default: By default, this database property is OFF (is_trustworthy_on = 0), except for the msdb database in which it is required to be ON. 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.

How it is checked

Audit method: SQL query

sql_query

sqlcmd -b -h -1 -W -Q "SET NOCOUNT ON; SELECT COUNT(*) FROM sys.databases WHERE is_trustworthy_on = 1 AND name <> 'msdb';"

Expected output: 0

How it is fixed

Fix method: Guidance or infrastructure patch

Execute the following T-SQL statement against the databases (replace <database_name> below) returned by the Audit Procedure: ALTER DATABASE [<database_name>] SET TRUSTWORTHY OFF;

Properties

Operating systems: Any
Tags: mssqldatabaseprivileges
Reference: CIS Microsoft SQL Server 2025 Benchmark v1.0.0 - 2.9 Ensure 'Trustworthy' Database Property is set to 'Off'

Check this host

Run this on a machine you are allowed to audit. The scan is read-only.

shell

tmaegis scan --target mssql