Ensure no admin role membership in MSDB database

中级别 1自动化mssql

说明

Based on Microsoft design an account with DB_OWNER can elevate permissions to SYSADMIN Default: Default value is that only dbo user is member of db_owner role in MSDB database 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.

检查方式

审计方法: SQL 查询

sql_query

sqlcmd -b -h -1 -W -Q "SET NOCOUNT ON; SELECT COUNT(*) FROM msdb.sys.database_role_members AS drm JOIN msdb.sys.database_principals AS r ON drm.role_principal_id = r.principal_id JOIN msdb.sys.database_principals AS m ON drm.member_principal_id = m.principal_id WHERE r.name IN ('db_owner','db_securityadmin','db_ddladmin','db_datawriter') AND m.name <> 'dbo';"

预期输出: 0

修复方式

修复方法: 操作指南或基础设施补丁

USE [msdb] GO ALTER ROLE [db_owner] DROP MEMBER <username>;

属性

操作系统: 任意
标签: mssqldatabaseprivileges
参考: CIS Microsoft SQL Server 2025 Benchmark v1.0.0 - 3.13 Ensure no admin role membership in MSDB database

检查本机

请在您有权审计的机器上运行此命令。扫描为只读操作。

shell

tmaegis scan --target mssql