CVE-2025-30189 Dovecot缓存错误导致用户身份混淆漏洞

# CVE-2025-30189 PoC Concept # This vulnerability allows cache poisoning leading to user identity confusion # No public exploit available, this is a conceptual demonstration import socket import hashlib def check_cache_key_collision(target, users): """ Check if multiple users share the same cache key This is the root cause of CVE-2025-30189 """ cache_keys = {} for user in users: # Simulate cache key generation (simplified) cache_key = hashlib.md5(user.encode()).hexdigest()[:8] if cache_key in cache_keys: print(f"[+] Cache key collision detected: {cache_key}") print(f" Users sharing key: {cache_keys[cache_key]}, {user}") return True, cache_key cache_keys[cache_key] = user return False, None def exploit_cache_confusion(target, user1, user2): """ Exploit the cache confusion vulnerability After user1 login caches data, user2 gets user1's cached info """ print(f"[*] Step 1: Login as {user1}") # Login first user - this populates the cache print(f"[*] Step 2: Login as {user2}") # Due to cache bug, this returns {user1}'s cached information print(f"[!] User identity confusion: {user2} authenticated as {user1}") return True # Example usage if __name__ == "__main__": target = "mail.example.com" test_users = ["[email protected]", "[email protected]", "[email protected]"] collision_found, shared_key = check_cache_key_collision(target, test_users) if collision_found: print(f"[CRITICAL] System vulnerable to CVE-2025-30189") print(f"Shared cache key: {shared_key}")