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Date: Thu, 7 Mar 2019 20:22:53 +0900
From: Takashi Yano <takashi DOT yano AT nifty DOT ne DOT jp>
To: cygwin AT cygwin DOT com
Subject: Re: Logging-in using ssh elevates the user privilege.
Message-Id: <20190307202253.1a0ce6380e57cae2754e2334@nifty.ne.jp>
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References: <20190307010000 DOT fc28b73739c2dd66e609982b AT nifty DOT ne DOT jp>	<87ftrz6efm DOT fsf AT Rainer DOT invalid>
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Sorry, the message bellow accidentally lost the references.

On Thu, 7 Mar 2019 20:14:39 +0900 Takashi Yano wrote:
> On Wed, 06 Mar 2019 19:33:17 +0100 Achim Gratz wrote:
> > This has been the case for as long as I use ssh logins and is by design.
> > You can drop privileges after logon (see cygdrop), but not aquire new
> > ones.
> > 
> > So if that's changed behaviour for you, then your ssh logins didn't
> > actually work the way you thought they were.
> 
> Thank you for your reply. I had tried cygdrop, and confirmed that
> the problems below cannot be solved by cygdrop.
> 
> But I don't understand why...
> 
> On Thu, 7 Mar 2019 01:00:00 +0900 Takashi Yano wrote:
> > Because of this behaviour, the process started in a ssh
> > session cannot be killed from a normal mintty session.
> > 
> > This also causes gnu screen to freeze.
> > 
> > To reproduce this:
> > (1) Start screen in mintty window.
> > (2) Detatch from the screen (Ctrl-A d).
> > (3) Login via ssh.
> > (4) Attach screen by 'screen -r' in ssh session.
> > (5) Detach from the screen (Ctrl-A d).
> > (6) screen freezes and is not terminated normally.

-- 
Takashi Yano <takashi DOT yano AT nifty DOT ne DOT jp>

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