From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Thu, 20 Apr 2006 15:16:00 -0600 From: Latchesar Ionkov To: Fans of the OS Plan 9 from Bell Labs <9fans@cse.psu.edu> Subject: Re: [9fans] Install from CD fails Message-ID: <20060420211600.GA5690@ionkov.net> References: <3e1162e60604181222j5901d428udd71067d75336001@mail.gmail.com> <656bb955ff0cece1a2b1faa35f5345cf@swtch.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <656bb955ff0cece1a2b1faa35f5345cf@swtch.com> User-Agent: Mutt/1.4.2.1i Topicbox-Message-UUID: 4216ba36-ead1-11e9-9d60-3106f5b1d025 Another solution would be to refuse to honor setuid if the namespace allows a user to mount arbitrary file systems. Lucho On Tue, Apr 18, 2006 at 03:34:53PM -0500, Russ Cox said: > > A masking bind over /etc/passwd could be disasterous > > on Unix and I don't think anyone has really solved this problem yet > > this is trivial to solve. setuid binaries should run > in the default system name space instead of inheriting > the one in use where they are started. > > russ