linux-ext4 - Re: User permissions or UID/GIDs for portable disks?

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1193279915.25351.18.camel@eric-laptop>
Date:	Wed, 24 Oct 2007 19:38:35 -0700
From:	Eric <erpo41@...il.com>
To:	Bram Neijt <bneijt@...il.com>
Cc:	linux-ext4@...r.kernel.org
Subject: Re: User permissions or UID/GIDs for portable disks?

On Wed, 2007-10-24 at 20:10 +0200, Bram Neijt wrote:
> One of the best solutions I can come up with is if the filesystem
> would allow for a switch that would help ignore these permissions as
> part of the filesystem.

Ignoring file permissions on removable, user-supplied media sounds like
something that ought to be done above the level of individual
filesystems, just like how we ignore device files and suid/sgid files in
certain cases. Maybe this is something that ought to be one level up
from the ext2/3/4 filesystem driver?

In any case, this raises interesting questions. If we ignore permissions
on removable media, then anyone logged into your work computer (to which
you do not have root access) will be able to muck about with your files.
Is that something you want?

Cheers,

Eric

Download attachment "signature.asc" of type "application/pgp-signature" (190 bytes)