Re: SSH / X11 auth: needless complexity -> security problems?

2001-06-10 Thread Theo de Raadt
> this feature was inherited from ossh and the reason was: > 1) if $HOME is on NFS, then the cookie travels unencrypted > over the network, this defeats the purpose of X11-fwding > 2) $HOME/.Xauthority gets polluted with temorary cookies. > however, i'm not sure whether the be

Re: SSH / X11 auth: needless complexity -> security problems?

2001-06-10 Thread Casper Dik
>The problem isn't the authentication, it's the granularity of the >authorization that the filesystem affords. NFS leaves authorization >up to the client host (aka ``No File Security''). NFS provides most any level of security you desire; not many vendors implement NFS security, though. NFSv4

Re: SSH / X11 auth: needless complexity -> security problems?

2001-06-08 Thread Dale Southard
Peter W <[EMAIL PROTECTED]> writes: > On Tue, Jun 05, 2001 at 07:36:24PM -0700, Dale Southard wrote: > > Peter W <[EMAIL PROTECTED]> writes: > > > > Since the DISPLAY name changes, and an Xauthority file can > > > hold multiple X cookie credentials, is there any good reason why OpenSSH > > > nee

Re: SSH / X11 auth: needless complexity -> security problems?

2001-06-08 Thread Markus Friedl
On Tue, Jun 05, 2001 at 03:21:32PM -0400, Peter W wrote: > As for the patches that are more careful when creating > /tmp/ssh-/cookies -- isn't there still an assumption that > /tmp/ssh-/cookies won't be removed before the ssh session ends? no. sshd did switch uid/groups before c

Re: SSH / X11 auth: needless complexity -> security problems?

2001-06-05 Thread Peter W
On Mon, Jun 04, 2001 at 03:17:04PM -0700, [EMAIL PROTECTED] wrote: > On Mon, Jun 04, 2001 at 11:19:37AM -0400, David F. Skoll wrote: > > I could not duplicate this with OpenSSH 2.9p1-1 on Red Hat 6.2 > The problem code is invoked in the X forwarding of ssh. If you try > again, this time passing -