> 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/cache-poisoning/web-cache-poisoning-with-unkeyed-cookie.md).
# 使用未键控 Cookie 进行缓存投毒
使用未键控 Cookie 进行缓存投毒，PortSwigger Web Security Academy 实验笔记，包括利用流程、载荷测试、Burp Suite 验证以及修复上下文。
### 使用未纳入缓存键的 Cookie 进行 Web 缓存投毒
由于 cookies 未包含在缓存键中，此实验室易受 Web 缓存投毒攻击。一个合法用户会定期访问主页。/ 目标是用一个可执行的响应污染缓存 `alert(1)` 在受害者的浏览器中。
#### 响应分析
* 该请求被拦截到根路径（`/`).
* 在 HTML 响应中，我们观察到一个包含动态数据的 JavaScript 脚本：
```javascript
```
* 该 `前端` 字段是浏览器发送的 cookie 的值
#### Cookie 观察
* 在请求中，有一个名为 `fehost` 的 cookie：
```bash
fehost=prod-cache-01
```
* 该值会直接在响应中重复使用，而不会纳入缓存键。
#### Cookie 操纵
* 通过更改 `fehost` 该 cookie 的值，响应会立即反映新值：
```bash
fehost=test
```
* 这证实该 cookie **未被缓存索引** 并且它会影响缓存内容。
#### 有效载荷注入
* 然后将恶意值注入 cookie 中，以破坏 JavaScript 上下文并执行任意代码：
```javascript
test"-alert(1)-"efffe
```
* 有效载荷从 JavaScript 字符串中逃逸，并注入对……的调用 `alert(1)`.
---
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