metadata
license: mit
tags:
- security-research
- modelscan-bypass
modelscan-bypass-importlib-socket
Security Research — Modelscan Bypass PoC
Severity: HIGH
Module: importlib + operator.methodcaller → socket
Description: Network info leak via importlib.import_module("socket") + methodcaller
Impact: Bypasses socket.* blocklist. Can create sockets, connect to external hosts, exfiltrate data.
Modelscan Result
$ modelscan scan -p pytorch_model.bin
No issues found! ✅ (FALSE NEGATIVE)
Tested against: modelscan 0.8.8 (latest)
How It Works
The pickle file uses importlib + operator.methodcaller → socket which is NOT in modelscan's unsafe_globals blocklist.
When loaded via torch.load() or pickle.loads(), it executes the payload.
Responsible Disclosure
This PoC is part of responsible security research submitted via Huntr MFV program to help ProtectAI improve modelscan's detection capabilities.