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# uWSGI 未授权访问漏洞
uWSGI是一款Web应用程序服务器它实现了WSGI、uwsgi和http等协议并支持通过插件来运行各种语言通常被用于运行Python WEB应用。uwsgi除了是应用容器的名称之外它和Fastcgi之类的一样也是前端server与后端应用容器之间的一个交流标准。目前nginxapache也支持uwsgi协议进行代理转发请求。
uWSGI支持通过魔术变量Magic Variables的方式动态配置后端Web应用。如果其端口暴露在外攻击者可以构造uwsgi数据包并指定魔术变量`UWSGI_FILE`,运用`exec://`协议执行任意命令。
参考链接:
- https://github.com/wofeiwo/webcgi-exploits/blob/master/python/uwsgi-rce-zh.md
- https://xz.aliyun.com/t/3512
- https://uwsgi-docs.readthedocs.io/en/latest/Vars.html
## 漏洞环境
执行如下命令启动nginx+uwsgi环境
```
docker compose up -d
```
环境启动后,访问`http://your-ip:8080`即可查看一个Web应用其uwsgi暴露在8000端口。
## 漏洞复现
使用[poc.py](poc.py),执行命令`python poc.py -u your-ip:8000 -c "touch /tmp/success"`
![](1.png)
执行`docker compose exec web bash`进入容器,可见`/tmp/success`已经成功执行:
![](2.png)