From: David Kastrup <dak@gnu.org>
To: Sven Joachim <svenjoac@gmx.de>
Cc: emacs-pretest-bug@gnu.org,
Chris Moore <christopher.ian.moore@gmail.com>,
Stefan Monnier <monnier@iro.umontreal.ca>
Subject: Re: creating backups in temporary directories
Date: Fri, 07 Sep 2007 21:52:01 +0200 [thread overview]
Message-ID: <85k5r22qzi.fsf@lola.goethe.zz> (raw)
In-Reply-To: <87y7fii7bz.fsf@gmx.de> (Sven Joachim's message of "Fri\, 07 Sep 2007 21\:49\:52 +0200")
Sven Joachim <svenjoac@gmx.de> writes:
> Stefan Monnier <monnier@iro.umontreal.ca> writes:
>
>> 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.
>
> Really? I've just tried this (with a symlink in ~/tmp instead of
> /tmp), and Emacs removed the symlink for the backup before saving
> the file. Are there circumstances where it might not do this?
Can you spell "race condition"?
--
David Kastrup, Kriemhildstr. 15, 44793 Bochum
next prev parent reply other threads:[~2007-09-07 19:52 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 [this message]
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
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