Remote Code Execution in Calculate Function in parisneo/lollms

Vulnerability Description

A remote code execution vulnerability exists in the Calculate function of parisneo/lollms version 9.8. The vulnerability arises from the use of Python's `eval()` function to evaluate mathematical expressions within a Python sandbox that disables `__builtins__` and only allows functions from the `math` module. This sandbox can be bypassed by loading the `os` module using the `_frozen_importlib.BuiltinImporter` class, allowing an attacker to execute arbitrary commands on the server. The issue is fixed in version 9.10.

References

• https://huntr.com/bounties/4f8e73ac-aaaf-4d5c-a6dd-58215b5a7fea
• https://github.com/parisneo/lollms/commit/30e7eaba2ccfb751a81e7cb29fdef2ae8ffa6832