Ensure 'REMOTE_OS_AUTHENT' is set to FALSE

CríticaNivel 1Automatizadaoracle-db

Descripción

TRUE trusts the client's operating-system user name for OPS$ accounts, which any remote host can spoof. If the parameter no longer exists in the release it is treated as FALSE. Run on the database host as the Oracle software owner with ORACLE_HOME, ORACLE_SID and PATH set; connects with 'sqlplus -S / as sysdba' (OS authentication).

Cómo se verifica

Método de auditoría: Consulta SQL

sql_query

out=$(sqlplus -S -L / as sysdba 2>/dev/null <<'EOF'
whenever sqlerror exit failure
set heading off feedback off pagesize 0 verify off echo off trimspool on
select nvl((select upper(value) from v$parameter where name = 'remote_os_authent'), 'FALSE') from dual;
exit
EOF
) || exit 1
printf '%s\n' "$out"

Salida esperada: FALSE

Cómo se corrige

Método de corrección: Guía o parche de infraestructura

ALTER SYSTEM SET REMOTE_OS_AUTHENT = FALSE SCOPE = SPFILE; then restart the instance (rolling restart on RAC)

Propiedades

Sistemas operativos: Cualquiera
Etiquetas: oracle-dbdatabaseoracleauthentication
Referencia: CIS Oracle Database 19c Benchmark v2.0.0 - 2.3.14 Ensure 'REMOTE_OS_AUTHENT' Is Set to 'FALSE' (not in the 23ai v1.1.0 benchmark; the parameter is desupported there)

Verificar este host

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

shell

tmaegis scan --target oracle-db