> 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/path-traversal-with-absolute-path-bypass-when-sequences-are-blocked.md). # Travessia de caminho com bypass por caminho absoluto quando as sequências são bloqueadas Notas sobre travessia de caminho com bypass por caminho absoluto quando as sequências são bloqueadas para os laboratórios do PortSwigger Web Security Academy, incluindo fluxo de exploração, teste de payload, validação no Burp Suite e remedi ### Travessia de caminho de arquivo, sequências de travessia bloqueadas com bypass por caminho absoluto A aplicação bloqueia as sequências de travessia (`../`), mas trata o nome de arquivo fornecido como referente a um diretório de trabalho padrão. Para resolver o laboratório, basta recuperar o conteúdo do **/etc/passwd** arquivo. Como as sequências de travessia são filtradas, o mecanismo pode ser burlado indicando diretamente um caminho absoluto: ```bash /etc/passwd ``` Exemplo com **curl**: {% code overflow="wrap" %} ```bash curl 'https://0ac400440477a34780513f2a000f00a1.web-security-academy.net/image?filename=/etc/passwd' ``` {% endcode %}
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