full-disclosure - Re: [FD] Back To The Future: Unix Wildcards Gone Wild

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Message-ID: <53B00E5F.3000805@stamfest.at>
Date: Sun, 29 Jun 2014 15:02:23 +0200
From: Peter Stamfest <peter@...mfest.at>
To: fulldisclosure@...lists.org
Subject: Re: [FD] Back To The Future: Unix Wildcards Gone Wild

Am 2014-06-26 19:56, schrieb Ivan Delalande:
> Hi,
>
> On Thu, Jun 26, 2014 at 10:40:21AM +0200, defensecode wrote:
>> We wanted to inform all major *nix distributions via our responsible
>> disclosure policy about this problem before posting it, because it is
>> highly likely that this problem could lead to local root access on many
>> distributions. But, since part of this research contained in the document
>> was mentioned on some blog entries, we are forced to release it in a
>> full version.
>>
>> Download URL:
>> http://www.defensecode.com/public/DefenseCode_Unix_WildCards_Gone_Wild.txt
> What kind of response are you expecting from the various distros on this
> exactly? Having "noglob" option enabled by default on all the shells on
> the system?
>
> Thanks,

The main issue here is, that nobody is using the double dash to inform
utilities to stop option processing.

the correct call for rm would always have to be

   rm <your options> -- *

aliases come to mind as comes an option to have a shell expand wildcards
to a list prefixed with a double dash IFF any file starts with a dash.

Peter

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