manja316
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modelscan-ctypes-rce-bypass

security-research

modelscan-bypass

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Modelscan ctypes RCE Bypass PoC

Security research - modelscan bypass via ctypes.CDLL + operator.methodcaller.

DO NOT LOAD THESE FILES - they contain proof-of-concept code execution payloads.

Vulnerability

modelscan does not block the ctypes module or operator.methodcaller. This allows crafting pickle files that:

Load libc via ctypes.CDLL("libc.so.6")
Call system() to execute arbitrary commands
Pass modelscan with "No issues found"

Affected

modelscan 0.7.x and earlier
Any system relying on modelscan to detect malicious pickle files

Modules Used

ctypes.CDLL - not in unsafe_globals blocklist
operator.methodcaller - only operator.attrgetter is blocked

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