Ensure no login exists with the name 'sa'

MediaNivel 1Automatizadamssql

Descripción

The sa login (e.g. principal) is a widely known and often widely used SQL Server account. Therefore, there should not be a login called sa even when the original sa login (principal_id = 1) has been renamed. Enforcing this control reduces the probability of an attacker executing brute force attacks against a well-known principal name.

Cómo se verifica

Método de auditoría: Consulta SQL

sql_query

sqlcmd -b -h -1 -W -Q "SET NOCOUNT ON; SELECT COUNT(*) FROM sys.server_principals WHERE name = 'sa';"

Salida esperada: 0

Cómo se corrige

Método de corrección: Guía o parche de infraestructura

Execute the appropriate ALTER statement below based on the principal_id returned for the login named sa. Replace the <different_name> value within the below syntax and execute to rename the sa login. USE [master] GO -- If principal_id = 1 or the login owns database objects, rename the sa login ALTER LOGIN [sa] WITH NAME = <different_name>; GO

Propiedades

Sistemas operativos: Cualquiera
Etiquetas: loggingmssqlsqlserver-2022
Referencia: CIS Microsoft SQL Server 2022 Benchmark v1.3.0 - 2.16 Ensure no login exists with the name 'sa'

Verificar este host

Ejecute esto en un equipo que tenga permiso para auditar. El escaneo es de solo lectura.

shell

tmaegis scan --target mssql