> 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/access-control/multi-step-process-without-access-control.md).

# 没有访问控制的多步骤流程

### 无访问控制的多步骤流程

该实验室提供一个管理面板，其中有一个用于更改用户角色的多步骤流程。该流程存在一个缺陷：其中一个步骤未应用访问控制。/ 为了进行练习，可以先使用以下方式检查管理面板： **administrator:admin** 凭据。/ 要解决该实验室，你需要使用 **wiener:peter** ，并利用有漏洞的步骤将你自己的角色提升为管理员级别。

<figure><img src="/files/eef018ae880f12e72d089a2124af0a435fc965b9" alt=""><figcaption></figcaption></figure>

### 流程分析

角色更改发生在两个单独的请求中：

<figure><img src="/files/bfed1d5aba26d47776075cca6bf38d810928f18d" alt=""><figcaption></figcaption></figure>

#### **第一步：请求升级**

```bash
username=carlos&action=upgrade
```

使用 wiener 会话时，此请求被拒绝：/ 服务器提示该用户不被允许。

<figure><img src="/files/59aa66a7a45064e3aaaae600d9f3ece7ebacf92e" alt=""><figcaption></figcaption></figure>

#### **第二步：确认操作**

```bash
action=upgrade&confirmed=true&username=carlos
```

第二阶段不包含 **访问控制**。/ 通过使用 wiener 的会话 cookie 发送此请求：

<figure><img src="/files/5946f48dd0870b5a35a30bd84393fbc6fc4eec14" alt=""><figcaption></figcaption></figure>

服务器响应 **OK**，尽管 wiener 不应拥有必要的权限


---

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