[issue4489] shutil.rmtree is vulnerable to a symlink attack

[Larry Hastings]

Larry Hastings <larry at hastings.org> added the comment:

I'm pretty busy right now, please open a ticket for listdir.

_rmtree_safe_fd could remove the directory just after the recursive step using the parent's dirfd.  Of course you'd also have to add a rmdir for the very-tippy-top after the original call in shutil.rmtree too.  But this would prevent the malicious user from even removing empty directories.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue4489>
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