Rooting FreeBSD , Privilege Escalation using Jails (P??????tur)

[Jamie Landeg Jones]

> It used to confuzzle sysadmins on SUNos when the mount point was
> 0700.  The underlying mode disapeared when the mount was made, but it
> was still being enforced. Suddenly no one but root could use say /usr
> even though it was apparently 0755

I remember that happening! I thought it was like that on FreeBSD too,
but if it was, it isn't any longer!

I always make mount-points 0111 these days