From: Steve Kemp <skx@tardis.ed.ac.uk>
Cc: emacs-devel@gnu.org
Subject: Re: many packages write to `temporary-file-directory' insecurely
Date: Mon, 18 Mar 2002 23:49:01 +0000 [thread overview]
Message-ID: <20020318234901.A3377@tardis.ed.ac.uk> (raw)
In-Reply-To: <1016490983.17157.4.camel@space-ghost>; from walters@verbum.org on Mon, Mar 18, 2002 at 05:36:23PM -0500
On Mon, Mar 18, 2002 at 05:36:23PM -0500, Colin Walters wrote:
> I was talking with some Debian hackers on IRC about this problem, and
> one of them suggested a setgid helper program, sort of like movemail.
> This seems to me to be the best solution. We could give it arguments
> like:
>
> /usr/lib/emacs/21.3/update-score --file=/var/games/emacs/snake-scores
> --add-score "Jane Hacker <jane@gnu.org> 12345 points"
> Any thoughts/objections regarding this solution?
It would solve the file locking problem, and allow shared scores.
But it would appear to have the major flaw that a malicious user
could fake their scores with almost no effort, eg:
[matrix] skx > update-score --file=/var/games/emacs/snake-score --add-score "Steve 99999999999999 points"
I assume that you'd be making this setgid games, so that other files
wouldn't be overwritable..?
Steve
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next prev parent reply other threads:[~2002-03-18 23:49 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-03-01 1:15 many packages write to `temporary-file-directory' insecurely Colin Walters
2002-03-02 11:52 ` Pavel Janík
2002-03-02 21:12 ` Colin Walters
2002-03-02 23:13 ` Pavel Janík
2002-03-03 17:18 ` Stefan Monnier
2002-03-03 20:36 ` Al Petrofsky
2002-03-04 0:07 ` Stefan Monnier
2002-03-04 23:41 ` Richard Stallman
2002-03-05 2:26 ` Al Petrofsky
2002-03-05 15:15 ` Stefan Monnier
2002-03-05 19:57 ` Al Petrofsky
2002-03-05 21:58 ` Richard Stallman
2002-03-04 23:40 ` Richard Stallman
2002-03-05 4:30 ` Colin Walters
2002-03-05 10:20 ` Andreas Schwab
2002-03-05 15:20 ` Stefan Monnier
2002-03-05 19:07 ` Richard Stallman
2002-03-06 4:40 ` Colin Walters
2002-03-06 7:35 ` Colin Walters
2002-03-06 16:59 ` Stefan Monnier
2002-03-07 2:40 ` Colin Walters
2002-03-07 6:00 ` Eli Zaretskii
2002-03-08 9:08 ` Richard Stallman
2002-03-08 9:08 ` Richard Stallman
2002-03-10 10:46 ` Colin Walters
2002-03-11 9:01 ` Richard Stallman
2002-03-17 22:08 ` Colin Walters
2002-03-18 20:06 ` Richard Stallman
2002-03-18 22:36 ` Colin Walters
2002-03-18 23:49 ` Steve Kemp [this message]
2002-03-19 0:31 ` Colin Walters
2002-03-19 6:22 ` Pavel Janík
2002-03-20 5:10 ` Richard Stallman
2002-03-27 23:46 ` Colin Walters
2002-03-31 1:24 ` Richard Stallman
2002-04-05 7:30 ` Colin Walters
2002-04-05 23:41 ` Richard Stallman
2002-03-06 16:59 ` Stefan Monnier
2002-03-06 19:05 ` Colin Walters
2002-03-08 9:07 ` Richard Stallman
2002-03-08 18:52 ` Colin Walters
2002-03-09 10:49 ` Richard Stallman
2002-03-03 14:39 ` Richard Stallman
2002-03-04 4:08 ` Richard Stallman
2002-03-04 4:08 ` Richard Stallman
2002-03-04 4:50 ` Colin Walters
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