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From: "Vladimir 'phcoder' Serbinenko" <phcoder@gmail.com>
To: xen-devel <xen-devel@lists.xenproject.org>,
	 development of GRUB 2 <grub-devel@gnu.org>
Subject: Fwd: Re: [PATCH 3/4] Build grub.xen.
Date: Thu, 12 Dec 2013 17:49:51 +0100	[thread overview]
Message-ID: <CAEaD8JNFuZfwtLCQg85LQOTO9xfr1h=y=xpYOEwk_JNzhxxtJw@mail.gmail.com> (raw)
In-Reply-To: <CAEaD8JM_cUCb46GZs8=Ct-M15FHcD_X7tgiq8=570T9cyWs=bA@mail.gmail.com>

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---------- Forwarded message ----------
From: "Vladimir 'phcoder' Serbinenko" <phcoder@gmail.com>
Date: Dec 12, 2013 5:45 PM
Subject: Re: [PATCH 3/4] Build grub.xen.
To: "The development of GNU GRUB" <grub-devel@gnu.org>

No I meant full access to just obe of guest partitions. E.g. FTP may be
using separate partition and non-admins may have control over it. If system
has some kind of automatic user creation and /home is separate someone may
register as boot or grub and put grub.xen in his directory. If /tmp is on
separate partition and not in RAM then everybody can put grub.xen to
/tmp/grub/grub.xen
On Dec 12, 2013 5:39 PM, "Colin Watson" <cjwatson@ubuntu.com> wrote:

> On Thu, Dec 12, 2013 at 05:24:50PM +0100, Vladimir 'phcoder' Serbinenko
> wrote:
> > This config has a security problem. If a user has full acces to some
> > partition (e.g. fto server partition) he can put grub.xen there and load
> > his own code
>
> Only in the domU context, though.  If a user has full access to a guest
> filesystem then of course they can run code in the domU.  This seems
> unsurprising and not a problem?
>
> --
> Colin Watson                                       [cjwatson@ubuntu.com]
>
> _______________________________________________
> Grub-devel mailing list
> Grub-devel@gnu.org
> https://lists.gnu.org/mailman/listinfo/grub-devel
>

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  reply	other threads:[~2013-12-12 16:49 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-12-12 15:36 [PATCH 0/4] Turn-key PV-GRUB2 installation Colin Watson
2013-12-12 15:37 ` [PATCH 1/4] Add an option to exclude devices from search results Colin Watson
2013-12-13 12:27   ` [Xen-devel] " Vladimir 'φ-coder/phcoder' Serbinenko
2013-12-13 13:18     ` Colin Watson
2013-12-13 15:40       ` [PATCH] add --boot-directory option to grub-mkstandalone Andrey Borzenkov
2013-12-20 12:16         ` Colin Watson
2013-12-21 10:29           ` Andrey Borzenkov
2013-12-21 10:37             ` Andrey Borzenkov
2013-12-22 17:20     ` [Xen-devel] [PATCH 1/4] Add an option to exclude devices from search results Jordan Uggla
2013-12-12 15:37 ` [PATCH 2/4] Accept environment variables on the command line for Xen Colin Watson
2013-12-12 15:37 ` Colin Watson
2013-12-12 15:48   ` Andrey Borzenkov
2013-12-12 16:11     ` Colin Watson
2013-12-12 16:15       ` Vladimir 'phcoder' Serbinenko
2013-12-12 16:13     ` Vladimir 'phcoder' Serbinenko
2013-12-12 17:12       ` Andrey Borzenkov
2013-12-12 17:58         ` Vladimir 'φ-coder/phcoder' Serbinenko
2013-12-12 19:12           ` Colin Watson
2013-12-12 19:50             ` Vladimir 'φ-coder/phcoder' Serbinenko
2013-12-12 16:13     ` Vladimir 'phcoder' Serbinenko
2013-12-12 15:37 ` [PATCH 3/4] Build grub.xen Colin Watson
2013-12-12 16:24   ` Vladimir 'phcoder' Serbinenko
2013-12-12 16:39     ` Colin Watson
2013-12-12 16:45       ` Vladimir 'phcoder' Serbinenko
2013-12-12 16:49         ` Vladimir 'phcoder' Serbinenko [this message]
2013-12-12 16:49         ` Fwd: " Vladimir 'phcoder' Serbinenko
2013-12-12 17:36         ` Colin Watson
2013-12-12 17:41           ` Andrey Borzenkov
2013-12-12 18:08             ` Vladimir 'φ-coder/phcoder' Serbinenko
2013-12-12 18:08             ` Vladimir 'φ-coder/phcoder' Serbinenko
2013-12-13 11:56   ` Colin Watson
2013-12-13 12:19     ` Vladimir 'φ-coder/phcoder' Serbinenko
2013-12-13 12:19     ` Vladimir 'φ-coder/phcoder' Serbinenko
2013-12-13 11:56   ` Colin Watson
2013-12-12 15:37 ` Colin Watson
2013-12-12 15:37 ` [PATCH 4/4] Improve installation on Xen Colin Watson
2013-12-12 16:23   ` Vladimir 'phcoder' Serbinenko
2013-12-12 16:23   ` [Xen-devel] " Vladimir 'phcoder' Serbinenko
2013-12-13 11:58     ` Colin Watson
2013-12-16 11:42 ` [Xen-devel] [PATCH 0/4] Turn-key PV-GRUB2 installation Ian Campbell
2013-12-16 12:05   ` Samuel Thibault
2013-12-16 12:05   ` Samuel Thibault
2013-12-16 11:42 ` Ian Campbell

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