TMA-ORACLE-DB-6.1.9

Ensure 'ALTER SYSTEM' Is Revoked From Unauthorized 'GRANTEE'

ВысокийУровень 1Автоматическаяoracle-db

Описание

The Oracle database ALTER SYSTEM privilege allows the designated user to dynamically alter the instance's running operations. Unauthorized grantees should not have that privilege. Counts non-Oracle-maintained users and roles holding the privilege directly or through a role chain (CDB_SYS_PRIVS / CDB_ROLE_PRIVS); 0 is required, so every approved grantee must be reviewed and documented as an exception. Run on the database host as the Oracle software owner with ORACLE_HOME, ORACLE_SID and PATH set; connects to the CDB root with 'sqlplus -S / as sysdba' (OS authentication) so CDB_/GV$ views cover all open PDBs.

Как проверяется

Метод проверки: SQL-запрос

sql_query

out=$(sqlplus -S -L / as sysdba 2>/dev/null <<'EOF'
whenever sqlerror exit failure
set heading off feedback off pagesize 0 verify off echo off trimspool on define off
with nm as (
  select role as grantee from cdb_roles where oracle_maintained = 'N'
  union select username from cdb_users where oracle_maintained = 'N'
),
direct_privs as (select grantee from cdb_sys_privs where privilege in ('ALTER SYSTEM')),
indirect_privs as (
  select grantee from cdb_role_privs
  start with granted_role in (select p.grantee from cdb_sys_privs p, cdb_roles r where p.privilege in ('ALTER SYSTEM') and p.grantee = r.role)
  connect by nocycle prior grantee = granted_role
)
select count(*) from (select grantee from direct_privs union select grantee from indirect_privs) c
where c.grantee in (select grantee from nm);
exit
EOF
) || exit 1
printf '%s\n' "$out"

Ожидаемый вывод: 0

Как исправляется

Метод исправления: Рекомендация или патч инфраструктуры

To remediate this setting, execute the following SQL statement, keeping in mind if this is granted in both container and pluggable database, you must connect to both places to revoke. REVOKE ALTER SYSTEM FROM <grantee>;

Свойства

Операционные системы: Любая
Теги: oracle-dbdatabaseoracleprivileges
Источник: CIS Oracle Database 23ai Benchmark v1.1.0 - 6.1.9 Ensure 'ALTER SYSTEM' Is Revoked From Unauthorized 'GRANTEE'

Проверить этот хост

Выполните команду на компьютере, аудит которого вам разрешён. Сканирование работает только на чтение.

shell

tmaegis scan --target oracle-db