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From: Gioele Barabucci <gioele@svario.it>
To: dash@vger.kernel.org
Subject: Re: Inheriting IFS from environment
Date: Sun, 3 Jan 2016 19:46:45 +0100	[thread overview]
Message-ID: <n6bqam$fk2$1@ger.gmane.org> (raw)
In-Reply-To: <56840F22.6040302@inlv.org>

On 30/12/2015 18:06, Martijn Dekker wrote:
> Unlike bash, *ksh and zsh, dash allows inheriting IFS from the environment:
> 
> $ IFS=bla dash -c "x='hela hola'; echo \$x"
> he  ho
> 
> This seems a bit dodgy from a security point of view.

Hi,

The Debian BTS contains a similar report:
<https://bugs.debian.org/541642>. One suggestion from that thread:

> POSIX says (IEEE Std 1003.1, 2004 Edition; 2.5.3 Shell Variables):
>
>> Implementations may ignore the value of IFS in the environment at the
>> time the shell is invoked, treating IFS as if it were not set.

Regards,

--
Gioele Barabucci <gioele@svario.it>



      reply	other threads:[~2016-01-03 18:47 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-12-30 17:06 Inheriting IFS from environment Martijn Dekker
2016-01-03 18:46 ` Gioele Barabucci [this message]

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