Author: Hendrik Boom Date: To: dng Subject: Re: [DNG] [devuan-dev] [PATCH] (security) launcher: don't attempt
to execute arbitrary binaries
On Thu, Feb 13, 2020 at 03:22:23PM -0800, tom wrote: > On Mon, 13 Jan 2020 10:27:40 +0100
> Evilham via Dng <dng@???> wrote:
> > Hello Enrico,
> > On dt., gen. 07 2020, Enrico Weigelt wrote:
> > > What might supposed to be convenience functionality, poses a
> > > real-life
> > > security threat:
> > >
> > > A user can be tricked be tricked to download malicious code,
> > > unpack it with
> > > +x permissions (eg. via tar) and execute it by just clicking on
> > > the icton.
> > > In combination with other techniques (eg. homoglyphs), even more
> > > experienced
> > > users can be tricked "open" some supposedly harmless file type,
> > > while Thunar
> > > in fact executes a binary - with full user's privileges. (the
> > > same approach
> > > is one of the primary infection vectors used by thousands of
> > > malwares in
> > > Windows world, which already caused gigantic damages).
> > >
> > > Therefore introduce a new setting and only execute programs if
> > > explicitly
> > > enabled.
> > That's great!
> > Have you tried poking Thunar's developers into merging such a
> > feature?
> > This is where the developers would like such things:
> > https://docs.xfce.org/xfce/thunar/bugs > >
> > It'd really be the best place for a setting like this to land and
> > benefit all Thunar users out there (which are not limited to
> > Debian-like or even Linux, but also include the BSDs).
> > Cheers!
> > --
> > Evilham
> > _______________________________________________
> > Dng mailing list
> > Dng@???
> > https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng >
> If the user is stupid enough to run random binaries from the internet
> no amount of nannyware is going to protect them. All this does is add
> another layer of inconvenience and complexity literal computers users
> have to work around.
The problem is that the user may think he's opening an
image and it turns out to be an executable.
> If you have to deal with users like that then set their home
> directory's mount with option noexec.
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