Bugtraq: Re: /proc filesystem allows bypassing directory permissions on

[Pavel Machek <pavel () ucw cz>]

On Wed 2009-11-04 09:06:25, Gabor Gombas wrote:
> On Wed, Nov 04, 2009 at 10:17:13AM +1100, psz () maths usyd edu au wrote:
>
> > But, mount requires root (and root can do anything, including shooting
> > himself in the foot).
> Irrelevant. The statement was that if /proc is not mounted, then the
> link count tells if there are other ways to access the inode besides the
> path you have used to access it. I showed you that this statement is
> false.
You showed almost nothing. If you assume root interference, he can do
anything, including overwriting kernel with another one.

OTOH /proc is mounted by default...
                                                                        Pavel
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