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From: Glenn Morris <rgm@gnu.org>
To: 41619@debbugs.gnu.org
Cc: philip.kaludercic@fau.de
Subject: bug#41619: [PATCH] Mark python-shell-virtualenv-root as safe local variable
Date: Sat, 13 Jun 2020 13:20:29 -0400	[thread overview]
Message-ID: <65eeqi7uhu.fsf@fencepost.gnu.org> (raw)
In-Reply-To: <83eeqj4dj2.fsf@gnu.org> (Eli Zaretskii's message of "Sat, 13 Jun 2020 10:42:57 +0300")


I don't understand how python-shell-virtualenv-root can be considered a
safe local variable. Surely it controls what "python" executable gets run.

As a test, I did:

python3 -m venv /tmp/foo

I then replaced /tmp/foo/bin/python with a shell-script:

 #!/bin/bash
 echo oh-oh

I then ran:
emacs -Q --eval '(setq python-shell-virtualenv-root "/tmp/foo")' -f python-mode
C-c C-p

This gives an inferior Python buffer with contents:

  oh-oh

  Process Python finished

In other words, this looks like a recipe for arbitrary code execution.





  reply	other threads:[~2020-06-13 17:20 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-30 20:31 bug#41619: [PATCH] Mark python-shell-virtualenv-root as safe local variable Philip K.
2020-06-13  7:42 ` Eli Zaretskii
2020-06-13 17:20   ` Glenn Morris [this message]
2020-06-15 18:53     ` Eli Zaretskii
2020-06-16 16:52       ` Philip K.
2020-06-16 17:18         ` Eli Zaretskii
2020-06-16 17:32           ` Philip K.
2020-06-16 17:54             ` Eli Zaretskii
2020-06-16 19:49               ` Philip K.
2020-06-20  8:47                 ` Eli Zaretskii

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