> 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/web-cache-deception/web-cache-deception-with-exact-match-rules.md).
# 具有精确匹配规则的 Web 缓存欺骗
### 利用精确匹配缓存规则实施 Web Cache 欺骗
#### 实验目标
* 更改用户电子邮件地址 **administrator**.
* 可用连接： **wiener:peter**.
* 提供了一个分隔符列表：Web 缓存欺骗实验分隔符列表。
#### 观察到的上下文
* 在 **我的账户**，有一个用于更改电子邮件的字段。
* 发送的请求如下：
```bash
email=test%40test.com&csrf=Bfo2p16Es7RG8W0XBZxAJSuyJKOHbK0a
```
#### 分隔符测试
* 通过测试列表中的字符，网站尤其接受：
* 该 **逗号** `;`
* 该 **问号** `?`
经典攻击在这个实验中不起作用。
#### 发现隐藏资源
* 从 **目标 -> 站点地图**，使用 **发现内容**.
* 一个 **robots 文件.txt** 出现了，并且它被\*\*缓存\*\*了。
#### 通过规范化实现缓存接收（精确路径 + 绕行）
目的：通过让它看起来像一个隐藏资源，强制缓存存储敏感响应。
使用的应用：
```bash
GET /my-account;/../robots.txt
# 编码版本
GET /my-account;%2f%2e%2e%2frobots.txt
```
#### 发送给受害者的利用载荷
{% code overflow="wrap" %}
```javascript
```
{% endcode %}
结果：
* 返回的页面对应于 **管理员账户**.
在答案中，我们提取 **CSRF 令牌** 从电子邮件表单中，例如：
```html
```
#### 计划的最终阶段
* 使用此令牌生成一个 **PoC CSRF** 以发送一个 **POST** 请求到 **我的账户** 电子邮件更改页面，从而更改 **administrator** 电子邮件。
```html
```
---
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