Date: Thu, 22 Jul 2021 13:35:45 +0200 From: Jakub Wilk <jwilk@...lk.net> To: <oss-security@...ts.openwall.com> Subject: Re: ipython3 may execute code from the current working directory * Georgi Guninski <gguninski@...il.com>, 2021-07-22, 11:52: >Summary: under certain circumstances, ipython3 may execute code from >the current working directory. Looks like this might be intentional? Or at least there's an option to turn off this behavior: https://github.com/ipython/ipython/blob/7.25.0/IPython/core/shellapp.py#L219 https://ipython.readthedocs.io/en/stable/config/options/kernel.html#configtrait-InteractiveShellApp.ignore_cwd However, in some Debian packages (at least 5.8.0-1 from Debian buster), even --ignore-cwd doesn't help, because /usr/bin/python3 looks like this: VERSION="3" if [ ! -f /usr/bin/python$VERSION ] then echo "Please install the python$VERSION package." >&2 exit 1 else exec python$VERSION -c "import sys; sys.argv = '/usr/bin/ipython$VERSION'; from IPython.terminal.ipapp import launch_new_instance; launch_new_instance()" "$@" fi But "python3 -c" adds cwd to sys.path. -- Jakub Wilk
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