Ensure 'Orphaned Users' are Dropped From SQL Server Databases

中等級 1自動化mssql

說明

A database user for which the corresponding SQL Server login is undefined or is incorrectly defined on a server instance cannot log in to the instance and is referred to as orphaned and should be removed. Orphan users should be removed to avoid potential misuse of those broken users in any way.

檢查方式

稽核方法: SQL 查詢

sql_query

sqlcmd -b -h -1 -W -Q "SET NOCOUNT ON; DECLARE @n int = 0, @k int, @db sysname, @s nvarchar(max); DECLARE c CURSOR LOCAL FAST_FORWARD FOR SELECT name FROM sys.databases WHERE state = 0 AND HAS_DBACCESS(name) = 1; OPEN c; FETCH NEXT FROM c INTO @db; WHILE @@FETCH_STATUS = 0 BEGIN SET @s = N'USE ' + QUOTENAME(@db) + N'; SELECT @k = COUNT(*) FROM (SELECT DP.name FROM sys.database_principals DP WHERE DP.sid NOT IN (SELECT L.sid FROM sys.syslogins L WHERE L.sid = DP.sid) AND (SELECT containment FROM sys.databases WHERE name = DB_NAME()) = 0 AND DP.type IN (''S'',''U'',''G'') AND DP.type_desc NOT IN (''DATABASE_ROLE'',''APPLICATION_ROLE'') AND DP.name NOT IN (''dbo'',''guest'',''INFORMATION_SCHEMA'',''sys'',''MS_DataCollectorInternalUser'') AND NOT (DP.name = ''cdc'' AND (SELECT is_cdc_enabled FROM sys.databases WHERE name = DB_NAME()) = 1)) AS x;'; EXEC sp_executesql @s, N'@k int OUTPUT', @k = @k OUTPUT; SET @n = @n + @k; FETCH NEXT FROM c INTO @db; END; CLOSE c; DEALLOCATE c; SELECT @n;"

預期輸出: 0

修補方式

修補方法: 操作指南或基礎設施修補檔

If the orphaned user cannot or should not be matched to an existing or new login using the Microsoft documented process referenced below, run the following T-SQL query in the appropriate database to remove an orphan user: USE <database_name>; GO DROP USER <username>;

屬性

作業系統: 不限
標籤: mssqlsqlserver-2022
參考資料: CIS Microsoft SQL Server 2022 Benchmark v1.3.0 - 3.3 Ensure 'Orphaned Users' are Dropped From SQL Server Databases

檢查此主機

請在您有權稽核的機器上執行此指令。掃描為唯讀操作。

shell

tmaegis scan --target mssql