Re: sys_chroot+sys_fchdir Fix

From: Phillip Susi
Date: Tue Sep 25 2007 - 16:53:35 EST

Alan Cox wrote:
On Fri, 21 Sep 2007 13:39:34 -0400
Phillip Susi <psusi@xxxxxxxxxx> wrote:

David Newall wrote:
* In particular, the superuser can escape from a =91chroot jail=92 by d=
=91mkdir foo; chroot foo; cd ..=92.
No, he can not.

The superuser can escape that way - its expected and fine behaviour

Does not work for me, and that would be the EXACT thing chroot is supposed to prevent. Maybe you guys are thinking of a program that calls chroot() but leaves cwd outside the chroot still being able to navigate outside of it?

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