> 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
Contournement de l’authentification InfluxDB CVE-2019-20933, énumération de la base de données et découverte d’identifiants.
Le port 8086 expose InfluxDB version 1.7.5. La cible est affectée par un problème de contournement d’authentification d’InfluxDB :
**Vulnérabilité :**[CVE-2019-20933](https://nvd.nist.gov/vuln/detail/CVE-2019-20933)
{% embed url="" %}
{% hint style="info" %}
Cette vulnérabilité permet de contourner l’authentification en exploitant un jeton JWT dont le `Secret partagé` est vide, ce qui accorde l’accès à la base de données.
{% endhint %}
#### 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 utilisateur. Commencez par lister les mesures (tables) :
```sql
SHOW MEASUREMENTS;
```
Le **`jeton utilisateur`** contient des informations utiles. Pour explorer les colonnes de cette mesure, exécutez :
```sql
SHOW FIELD KEYS FROM "user";
```
Affichez les 10 premiers résultats de la `jeton utilisateur` table :
```sql
SELECT * FROM "user" LIMIT 10;
```
mot de passe
nom d’utilisateur
WillyWonka2021
wilhelm
woBeeYareedahc7Oogeephies7Aiseci
catherine
RoyalQueenBee$
charles
Le mot de passe de *catherine* est **`woBeeYareedahc7Oogeephies7Aiseci`**, ce qui permet d’accéder à l’utilisateur **flag**.
---
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