use time-based bind injection to prove the vulnerability

Hello,

I would like to report for XSS vulnerability.

In file https://github.com/jorycn/thinkphp-zcms/blob/master/ThinkPHP/Mode/Api/Controller.class.php line 69

$handler  =   isset($_GET[C('VAR_JSONP_HANDLER')]) ? $_GET[C('VAR_JSONP_HANDLER')] : C('DEFAULT_JSONP_HANDLER');
exit($handler.'('.json_encode($data).');'); 

exit function will terminate the script and print a message which has $_GET[C('VAR_JSONP_HANDLER')]. Then there is XSS vulnerability.

Vulnerability file：\Application\Home\Controller\MessageController.class.php
You can see that the xss vulnerability is not filtered here

Vulnerability to reproduce:
1、Visit url: http://www.xxx.com/index.php?m=home&c=message&a=add ，use the post method to pass in parameter values，the specific operation screenshots are as follows:

2、Access background address: http://www.xxx.com/Admin/Message/index/menuId/132 ，you can see the success popup

Or you can log in to the background, click Extension Tools, and then click Message Management，a popup will appear next

Repair suggestion:
Use php built-in functions such as htmlspecialchars to filter xss vulnerabilities

Vulnerability file：\Application\Home\Controller\HomeController.class.php
The vulnerability code is as follows:
You can see that the incoming file is directly included here, and the file is not filtered

Vulnerability to reproduce:
1、First create a 1.txt file in the root directory of the website，of course, this can be any file in the root directory of the website

2、The code in the 1.txt file is as follows:

3、Visit url: http://www.xxx.com/index.php?m=home&c=home&a=sp_set_config ，use the post method to pass in $file and $config_array

4、You can see that shell.php is successfully generated in the root directory of the website

5、Use backdoor tool to connect shell.php

Repair suggestion:
1、Restrict incoming files to php suffix
2、Specifies the incoming filename
3、Detect and filter the content of incoming files