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Message-ID: <CAEr-gPHxfhxNZu0eGuZLvDWmjQjTw3d1BsTZyFKES=Zm6d+LUQ@mail.gmail.com>
Date: Wed, 24 Feb 2016 16:56:09 -0500
From: Fernando Muñoz <fernando@...l-life.com>
To: oss-security@...ts.openwall.com
Subject: Re: CVE Request: bash-completion: dequote command injection
Hello Eric,
I never mentioned privilege escalation.
This issue how ever could appear when a different application uses
user input and calls "dequote" function that not only dequotes, but
also executes it as a command. If mitre doesn't consider it CVE worth,
that's OK!
Regards.
On Wed, Feb 24, 2016 at 3:58 PM, Eric Blake <eblake@...hat.com> wrote:
> On 02/24/2016 12:08 PM, Fernando Muñoz wrote:
>> Marcelo Echeverria and Fernando Muñoz discovered that the dequote
>> function included in bash-completion allows to execute arbitrary
>> commands since it uses the eval function to call printf and perform
>> the actual dequoting. bash-completion is included on Debian, Ubuntu
>> OpenSuse [1] and probably other distros.
>
> But what is the privilege escalation? This is no different than
> incorrectly using 'eval' in a shell script - you may have buggy code,
> and have an easy-to-trigger bug, but if you can't escalate privileges,
> how it is a CVE?
>
> --
> Eric Blake eblake redhat com +1-919-301-3266
> Libvirt virtualization library http://libvirt.org
>
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