> 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/influxdb-8086.md).

# InfluxDB - 8086

El puerto 8086 expone la versión 1.7.5 de InfluxDB. El objetivo se ve afectado por un problema de omisión de autenticación en InfluxDB:

<figure><img src="/files/843b31c5b5d1ab991d75799e840e138e05f84c8c" alt=""><figcaption></figcaption></figure>

**Vulnerabilidad:**[CVE-2019-20933](https://nvd.nist.gov/vuln/detail/CVE-2019-20933)

{% embed url="<https://github.com/LorenzoTullini/InfluxDB-Exploit-CVE-2019-20933>" %}

{% hint style="info" %}
Esta vulnerabilidad permite omitir la autenticación explotando un token JWT cuyo `Secreto compartido` está vacío, lo que otorga acceso a la base de datos.
{% endhint %}

<figure><img src="/files/f8a42c4466d17991652cbf8a0bfd4f38fe829358" alt=""><figcaption></figcaption></figure>

#### Acceso a la base de datos

Una vez conectado a InfluxDB, enumera las bases de datos disponibles:

```sql
SHOW DATABASES;
```

Selecciona la `devzat` base de datos y explora los datos de usuario. Comienza listando las mediciones (tablas):

```sql
SHOW MEASUREMENTS;
```

El **`token de usuario`** la tabla contiene información útil. Para explorar las columnas de esta medición, ejecuta:

```sql
SHOW FIELD KEYS FROM "user";
```

Muestra los primeros 10 resultados de la `token de usuario` tabla:

```sql
SELECT * FROM "user" LIMIT 10;
```

<table data-header-hidden><thead><tr><th width="357"></th><th></th></tr></thead><tbody><tr><td><strong>contraseña</strong></td><td><strong>username</strong></td></tr><tr><td>WillyWonka2021</td><td>wilhelm</td></tr><tr><td>woBeeYareedahc7Oogeephies7Aiseci</td><td>catherine</td></tr><tr><td>RoyalQueenBee$</td><td>charles</td></tr></tbody></table>

La contraseña de *catherine* es **`woBeeYareedahc7Oogeephies7Aiseci`**, que permite acceder al usuario **bandera**.


---

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