> 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/authentication/password-brute-force-via-password-change.md).

# 通过修改密码功能进行密码暴力破解

### 通过修改密码进行密码暴力破解

本实验展示了密码修改功能中的一个漏洞 **修改密码**，从而允许通过……进行攻击 **暴力破解**。/ 目标是找出……的密码 **Carlos**，然后访问其页面 \*\*

**提供的凭据：**

* 用户： `wiener`
* 密码： `peter`

**目标用户：**

* `carlos`

有一个部分允许你在身份验证后修改密码。/ 当输入错误的 **当前密码** 时，应用程序会返回一条特定的错误消息。

<figure><img src="/files/9b3f3e2a465a1aa915174423b9aef091fd75160a" alt=""><figcaption></figcaption></figure>

应用程序发送的请求示例：

{% code overflow="wrap" %}

```bash
username=wiener&current-password=test&new-password-1=test1234&new-password-2=test123
```

{% endcode %}

如果 `current-password` 字段无效时，显示的错误提示表明当前密码不正确。

<figure><img src="/files/c55ea1dceccbdd37850b60c4f494fe1bbcd252a4" alt=""><figcaption></figcaption></figure>

当替换 `wiener` 替换为 `carlos` 在查询中， **错误消息保持不变**，只要测试的密码不是正确的。配置一个 Burp Intruder 攻击

<figure><img src="/files/bb7014085eec6b6419c35e6deb0517ee6e72c22e" alt=""><figcaption></figcaption></figure>

然而，对于 **正确的密码**，错误消息会发生变化：/ 应用程序不再提示密码错误，而是提示 **身份信息不匹配**.

这种响应差异使我们能够 **区分有效密码和无效密码**.

<figure><img src="/files/63148f979d9faf9a2c9ea8406fc3ac135b02dd93" alt=""><figcaption></figcaption></figure>


---

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