[pkg-dhcp-devel] Bug#763013: closed by Thijs Kinkhorst <thijs at debian.org> (Re: isc-dhcp-client depends on /bin/bash, not /bin/sh)
troy at 7el.us
Sat Sep 27 14:20:52 UTC 2014
I will follow up with #763013, it's an obvious duplicate.
I had an unusable system after removing bash because of dhclient. Although
there is probably some other case where dhclient-script does not work correctly,
using /bin/sh instead got me an operational desktop system.
I find the risk of breakage over scripts that require /bin/bash is far easier
to manage than the risk of a new 0-day remote bash exploit worm.
On Sat, Sep 27, 2014 at 07:21:06AM +0000, Debian Bug Tracking System wrote:
> This is an automatic notification regarding your Bug report
> which was filed against the isc-dhcp-client package:
> #763013: isc-dhcp-client depends on /bin/bash, not /bin/sh
> It has been closed by Thijs Kinkhorst <thijs at debian.org>.
> Their explanation is attached below along with your original report.
> If this explanation is unsatisfactory and you have not received a
> better one in a separate message then please contact Thijs Kinkhorst <thijs at debian.org> by
> replying to this email.
> 763013: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=763013
> Debian Bug Tracking System
> Contact owner at bugs.debian.org with problems
> Date: Sat, 27 Sep 2014 09:17:47 +0200
> From: Thijs Kinkhorst <thijs at debian.org>
> To: 763013-done at bugs.debian.org
> Subject: Re: isc-dhcp-client depends on /bin/bash, not /bin/sh
> X-Spam-Status: No, score=-6.0 required=4.0 tests=BAYES_00,FROMDEVELOPER,
> MURPHY_DRUGS_REL8,RCVD_IN_DNSWL_NONE autolearn=ham
> Hi Troy,
> > Severity: critical
> > Tags: patch
> > Justification: breaks the whole system
> > Remove dependency on bash. Fixes ifup/ifdown with dhcp on unbashed-system.
> This is not a critical bug since using bash does not 'break the whole system'.
> The patch is also not correct because this script is marked /bin/bash for a
> reason, because it's not fully posix compliant and therefore will not run with
> just any /bin/sh.
> It's a valid request for the script to be modified to change its interpreter,
> it's already filed at #762923. Maybe you can help develop a tested patch for
> that to move it forward.
> Date: Sat, 27 Sep 2014 00:23:56 -0500
> From: Troy Benjegerdes <troy-debbugs at 7el.us>
> To: Debian Bug Tracking System <submit at bugs.debian.org>
> Subject: isc-dhcp-client depends on /bin/bash, not /bin/sh
> X-Spam-Status: No, score=-10.6 required=4.0
> XMAILER_REPORTBUG,X_DEBBUGS_CC autolearn=ham
> X-Mailer: reportbug 6.4.4
> Package: isc-dhcp-client
> Version: 4.2.2.dfsg.1-5+deb70u6
> Severity: critical
> Tags: patch
> Justification: breaks the whole system
> Remove dependency on bash. Fixes ifup/ifdown with dhcp on unbashed-system.
> Also see bug 763012
> --- dhclient-script.bad 2014-09-27 00:21:48.377145358 -0500
> +++ /sbin/dhclient-script 2014-09-27 00:15:31.508982652 -0500
> @@ -1,4 +1,4 @@
> # dhclient-script for Linux. Dan Halbert, March, 1997.
> # Updated for Linux 2. by Brian J. Murrell, January 1999.
> -- System Information:
> Debian Release: 7.6
> APT prefers stable-updates
> APT policy: (500, 'stable-updates'), (500, 'stable')
> Architecture: amd64 (x86_64)
> Kernel: Linux 3.2.0-4-amd64 (SMP w/2 CPU cores)
> Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
> Shell: /bin/sh linked to /bin/dash
> Versions of packages isc-dhcp-client depends on:
> ii debianutils 4.3.2
> ii iproute 20120521-3+b3
> ii isc-dhcp-common 4.2.2.dfsg.1-5+deb70u6
> ii libc6 2.13-38+deb7u4
> isc-dhcp-client recommends no packages.
> Versions of packages isc-dhcp-client suggests:
> ii avahi-autoipd 0.6.31-2
> pn resolvconf <none>
> -- no debconf information
Troy Benjegerdes troy at 7el.us
7 elements earth::water::air::fire::mind::spirit::soul grid.coop
Never pick a fight with someone who buys ink by the barrel,
nor try buy a hacker who makes money by the megahash
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