From: Richard Stallman <rms@gnu.org>
To: Stefan Monnier <monnier@iro.umontreal.ca>
Cc: emacs-pretest-bug@gnu.org, christopher.ian.moore@gmail.com,
svenjoac@gmx.de
Subject: Re: creating backups in temporary directories
Date: Sun, 09 Sep 2007 21:12:33 -0400 [thread overview]
Message-ID: <E1IUXpJ-000763-5M@fencepost.gnu.org> (raw)
In-Reply-To: <jwvy7ffeid0.fsf-monnier+emacs@gnu.org> (message from Stefan Monnier on Sun, 09 Sep 2007 15:44:56 -0400)
But in a directory with mode 1777 when you open a file that *you* own,
nobody else can remove it or rename it, so normally nobody can replace it
with a symlink. Emacs creates the problem when it moves /tmp/foo to
/tmp/foo~ at which point /tmp/foo is free for an attacker to take.
This suggests that Emacs should always do backup by copying
in such directories. Would that solve the problem?
next prev 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 [this message]
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
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