linux-kernel - Re: [PATCH] Move console redirect to pid namespace

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] [day] [month] [year] [list]

Date:	Fri, 15 Feb 2013 08:50:26 -0600
From:	Corey Minyard <tcminyard@...il.com>
To:	"Eric W. Biederman" <ebiederm@...ssion.com>
CC:	Bruno Prémont <bonbons@...ux-vserver.org>,
	Corey Minyard <cminyard@...sta.com>,
	containers@...ts.linux-foundation.org,
	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] Move console redirect to pid namespace

On 02/14/2013 10:23 PM, Eric W. Biederman wrote:
>
>>> With recent changes this is tied to the initial user namespace.  So the
>>> simple solution to this and so many other similiar security problems is
>>> to run your container in a user namespace.
>>>
>>> The permission check currently is capable(CAP_SYS_ADMIN) which requires
>>> the caller to have the CAP_SYS_ADMIN in the initial user namespace.
>> I'm not sure I follow.  Are these changes in k.org, or in another
>> repository someplace?
> In k.org. 3.7 would work. 3.8-rcX would work even better.
>
> root in a user namespace does not have permission to call TIOCCONS.

Ok, that's good enough for me.  I don't have a compelling reason to make 
it work, beyond liking consistency.

Thank you,

-corey
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/