metadata
license: mit
tags:
- security-research
- modelscan-bypass
modelscan-bypass-linecache
Security Research — Modelscan Bypass PoC
Severity: HIGH
Module: linecache
Description: Arbitrary file read via linecache.getlines()
Impact: Read any file on the system. Can steal SSH keys, credentials, environment files.
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 linecache 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.