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From: Richard Stallman <rms@gnu.org>
To: Stefan Monnier <monnier@iro.umontreal.ca>
Cc: christopher.ian.moore@gmail.com, emacs-pretest-bug@gnu.org
Subject: Re: creating backups in temporary directories
Date: Sun, 09 Sep 2007 21:12:31 -0400	[thread overview]
Message-ID: <E1IUXpH-00075m-Rr@fencepost.gnu.org> (raw)
In-Reply-To: <jwv4pi3fwy8.fsf-monnier+emacs@gnu.org> (message from Stefan Monnier on Sun, 09 Sep 2007 15:41:44 -0400)

    >     Worse yet: creating backup files in /tmp would be a security hole:
    >     some other user seeing you're currently editing /tmp/foo could create
    >     a symlink /tmp/foo~ to some interesting place and then when you save your
    >     file the backup could be placed at that interesting place chosen by
    >     the attacker.

    > Is that equally true for any directory that others can write?

    Yes.

This means that the practice of not making backup files in /tmp
is not a solution for the problem.

Is there any solution?

(I think the motive for not making backup files in /tmp
was just that it seemed pointless.)

      parent reply	other threads:[~2007-09-10  1:12 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-09-07 10:42 creating backups in temporary directories Chris Moore
2007-09-07 15:36 ` David Kastrup
2007-09-07 17:57   ` Stefan Monnier
2007-09-07 19:43     ` Davis Herring
2007-09-07 19:49     ` Sven Joachim
2007-09-07 19:52       ` David Kastrup
2007-09-08 19:47         ` Richard Stallman
2007-09-07 20:47       ` Stefan Monnier
2007-09-08 19:47         ` Richard Stallman
2007-09-09 19:44           ` Stefan Monnier
2007-09-09 20:01             ` David Kastrup
2007-09-09 20:27               ` Andreas Schwab
2007-09-10  1:11                 ` David Kastrup
2007-09-10 19:18                   ` Davis Herring
2007-09-10 19:55                     ` David Kastrup
     [not found]                   ` <37852.128.165.123.18.1189451917.squirrel@webmail.lanl.gov>
2007-09-10 19:23                     ` Davis Herring
2007-09-11 20:32                       ` Richard Stallman
2007-09-11 21:17                         ` Davis Herring
2007-09-10  1:12             ` Richard Stallman
2007-09-10  2:59               ` Stefan Monnier
2007-09-08 14:38     ` Chris Moore
2007-09-08 19:48     ` Richard Stallman
2007-09-09 19:41       ` Stefan Monnier
2007-09-09 19:45         ` David Kastrup
2007-09-10  1:12         ` Richard Stallman [this message]

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