From: Peter Stephenson <p.stephenson@samsung.com>
To: zsh workers <zsh-workers@zsh.org>
Subject: Re: Buffer overflow with long fd numbers in redirects
Date: Mon, 06 Oct 2014 15:09:00 +0100 [thread overview]
Message-ID: <20141006150900.4df5e556@pwslap01u.europe.root.pri> (raw)
In-Reply-To: <CAHYJk3QeCiKGuohbduaFa9cct48oL4c2+weEQKsWpr91EM_YkQ@mail.gmail.com>
On Mon, 06 Oct 2014 16:00:44 +0200
Mikael Magnusson <mikachu@gmail.com> wrote:
> Obviously anything over 999 will not fit in fdstr[]. I just checked
> and it appears we do not use snprintf anywhere, is this for any
> particular reason?
I think the shell's been around longer than snprintf has been
widespread. It will need checking in configure and variant code; the
latter makes the shell less safe overall.
> The patch below just changes the array to [64], it
> should be some time before any system uses a 256-bit type for fds. If
> you guys have another preference for solving this, let me know
Shouldn't DIGBUFSIZE work?
pws
next prev parent reply other threads:[~2014-10-06 14:09 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-06 14:00 Mikael Magnusson
2014-10-06 14:09 ` Peter Stephenson [this message]
2014-10-06 14:58 ` Mikael Magnusson
2014-10-06 16:18 ` Peter Stephenson
2014-10-06 14:24 ` Axel Beckert
2014-10-06 14:55 ` Mikael Magnusson
2014-10-06 15:07 ` Bart Schaefer
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