On Tue, Jun 12, 2018 at 7:10 AM, Tomasz Kłoczko
<kloczko.tom...@gmail.com> wrote:

> Just FTR: So far I was unable to find in any of the fredesktop.org or
> other specs (https://www.freedesktop.org/wiki/Software/) things like
> requirement use /usr/local{bi,sbin} or ~.local/bin in $PATH (and
> especially on the front of thes env variable). I would be really glad
> to find original reason why paths like /usr/local{bi,sbin} have been
> added to OOTB $PATH and why someone has been thinking that those paths
> should be added on the front of the $PATH.

Most of them aren't worried enough about it, or don't have enough
history to see underlying problems. Most think, and I'm pretty sure of
this, that you've gotten the security explanations done repeatedly and
seem to have ignored them. They're certainly not actually spelled out
in your analysis.

The simple fact is that "sudo" inherits $HOME and $PATH by default.
Your proposed change would make privilege escalation attacks against
sudo users much more trivial by opening up the attack surface for
every binary in /bin or /usr/bin to be replaced by a local binary in
~/.local/bin/. The situation you're trying to resolve, where a
powerful binary has intermingled components that may or not be matched
by system components, has been resolved repeatedly by tools like rvm
and pyvenv, by setting up a specific directory *not* enabled by
default, but making setup for that less default enabled tool easy for
the user to enable on a case by case basis.

So, the risk of your change is high for others, the consequences are
potentially *disastrous*,  and you've already got workarounds for your
particular needs *without* touching other system behavior  If you
really want it for youself as a user, which I do not recommend for
such a tool, well, you can insist on doing it for your own individual
needs on a case by case basis.
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