> 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/privesc/kernel-exploitation/dirty-cow-kernel-exploit-linux-privilege-escalation.md).
# 内核利用（Dirty COW）- Linux 权限提升
## 这是什么
内核权限提升针对 Linux 内核中的本地漏洞或发行版特定补丁。这些漏洞利用可能不稳定，因此在执行前，版本验证和实验室测试很重要。这个特定页面重点介绍 **内核利用（Dirty COW）** 并保持利用流程切合实际：识别条件，安全验证，然后运行证明影响所需的最小载荷。
## 枚举
在运行利用路径之前，先确认本地上下文和具体的错误配置。
```bash
uname -a
cat /etc/os-release
lsb_release -a 2>/dev/null
```
## 示例
## Dirty COW 内核示例
使用 **lsb\_release -a** 以识别操作系统版本。
如果你使用 **search exploit** 命令，你会看到许多与此 Ubuntu 版本相关的内核漏洞。
在这种情况下，我们关注的是：
运行 **脚本** 并为 dirty 用户输入密码：
我们成功地 **修改了密码** 在 /etc/passwd 中的 firefart 用户：
我们属于 **root** 组：
---
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