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Date: Mon, 24 Nov 2014 11:25:34 +1100
From: Michael Samuel <>
Subject: Re: so, can we do something about lesspipe? (+ a cpio
 bug to back up the argument)

On 23 November 2014 at 20:24, Michal Zalewski <> wrote:
> Ultimately, I think that there's an expectation that running less on a
> downloaded file won't lead to RCE, and the lesspipe behavior in many
> distros is almost certainly violating that. I'm also not sure if the
> automation actually scratches any real itch - I doubt that people try
> to run 'less' on CD images or ar archives when knowingly working with
> files of that sort.

It's distros that are shipping the lesspipe defaults (AFAIK), and
at-least the ones you
mentioned have "sandbox" capabilities.  I think it's reasonable on
Ubuntu and RHEL
to use AppArmor/SELinux to be paranoid in a lesspipe context (eg. not
allow access
to private files etc - it pipes right?).


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