> 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/fr/ports-and-services/influxdb-8086.md).

# InfluxDB - 8086

Le port 8086 expose InfluxDB version 1.7.5. La cible est affectée par un problème de contournement d’authentification InfluxDB :

<figure><img src="/files/27b51688eec85c97623e84807126b09deb3d1132" alt=""><figcaption></figcaption></figure>

**Vulnérabilité :**[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" %}
Cette vulnérabilité permet de contourner l’authentification en exploitant un jeton JWT dont le `SharedSecret` est vide, ce qui donne accès à la base de données.
{% endhint %}

<figure><img src="/files/4868a093f4a4b23ebc93ca1459aa8438f4c6a68d" alt=""><figcaption></figcaption></figure>

#### Accès à la base de données

Une fois connecté à InfluxDB, listez les bases de données disponibles :

```sql
SHOW DATABASES;
```

Sélectionnez la `devzat` base de données et explorez les données des utilisateurs. Commencez par lister les mesures (tables) :

```sql
SHOW MEASUREMENTS;
```

Le **`utilisateur`** La table contient des informations utiles. Pour explorer les colonnes de cette mesure, exécutez :

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

Affichez les 10 premiers résultats de `utilisateur` table :

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

<table data-header-hidden><thead><tr><th width="357"></th><th></th></tr></thead><tbody><tr><td><strong>mot de passe</strong></td><td><strong>le nom d'utilisateur</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>

Le mot de passe de *catherine* est **`woBeeYareedahc7Oogeephies7Aiseci`**, ce qui permet d’accéder à l’utilisateur **flag**.


---

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