similar to: Untrusted Cookies

Hi. I see this XAUTHORITY=/tmp/ssh-*/cookies issue has been discussed repeatedly, but I haven't seen a solution to the following problem. Remote user logs into firewall. On firewall, DISPLAY var set to secure channel, XAUTHORITY set to /tmp/ssh-*/cookies. X11 forwarding from firewall works fine. User logs into machine behind firewall, and sets DISPLAY var to firewall:X11DisplayOffset.0.

The following message is a courtesy copy of an article that has been posted to comp.emacs.xemacs as well. [This message has been CC'ed to the OpenSSH list in a plea to at least consider supporting more advanced usages of Xauth] Chris Green <sprout at dok.org> writes: > Its not configurable behavior. It always generates a new random file > in /tmp. Then they should probably

Hello all, $XAUTHORITY location has moved from under /tmp to ~/.Xauthority in 2.9p2. The commit message was: --- remove xauth-cookie-in-tmp handling. use default $XAUTHORITY, since we do already trust $HOME/.ssh you can use .ssh/sshrc and .ssh/environment if you want to customize the location of the xauth cookies --- The latter is true, but can only be enabled in per-user basis as far as I see.

http://bugzilla.mindrot.org/show_bug.cgi?id=803 Summary: Security Bug: X11 Forwarding is more powerful than it needs to be. Product: Portable OpenSSH Version: -current Platform: All OS/Version: All Status: NEW Severity: major Priority: P2 Component: ssh AssignedTo: openssh-bugs

On Thu, 15 Nov 2001, Dan Astoorian wrote: > Date: Thu, 15 Nov 2001 16:09:20 -0500 > From: Dan Astoorian <djast at cs.toronto.edu> > To: Ed Phillips <ed at UDel.Edu> > Subject: Re: X11 cookies and forwarding > > On Thu, 15 Nov 2001 15:46:22 EST, Ed Phillips writes: > > I'm guess I wasn't following the whole cookies discussion completely > >

In switching to openssh from ssh-1.2.27, I have encountered the following problem with the way openssh handles its XAUTHORITY files separately from ~/.Xauthority. XEmacs has a gnuserv process that runs and allows commands to be issued to a remote XEmacs process. The trouble is when the command is to make a new frame ( window ) on a different X display, it fails because the Xauth cookie is not in

$ ssh -v OpenSSH_5.1, OpenSSL 0.9.8j 07 Jan 2009 $ ssh -vvv -X example.com [ Relevant debug info: ] debug1: Remote protocol version 2.0, remote software version OpenSSH_5.1 [OpenSSH_5.1, OpenSSL 0.9.7j 04 May 2006] debug2: x11_get_proto: /usr/X11R6/bin/xauth -f /tmp/ssh-TLLOFKxvay/xauthfile generate :0.0 MIT-MAGIC-COOKIE-1 untrusted timeout 1200 2>/dev/null Warning: untrusted X11 forwarding

On 13/10/2017 15:29, Michael Felt wrote: > This verifies it is xauth related: > > debug3: sending debug message: No xauth program; cannot forward with > spoofing. > > so, added an extra debug - and this is what I see: > > debug1: session_input_channel_req: session 0 req x11-req > debug3: setup_x11fwd: xauth_location == /usr/X11R6/bin/xauth > debug3: sending debug

Dave Close wrote: > The error shown with "ssh -Xvvv" in all failure cases is, > debug3: send packet: type 91 > debug2: X11 auth data does not match fake data. > X11 connection rejected because of wrong authentication. > debug2: X11 rejected 1 i0/o0 I don't know but I do have questions. So maybe... What is the output of these commands? type xauth

http://bugzilla.mindrot.org/show_bug.cgi?id=771 Summary: Add option to override XAUTHORITY env variable Product: Portable OpenSSH Version: 3.7.1p1 Platform: UltraSparc OS/Version: SunOS Status: NEW Severity: enhancement Priority: P5 Component: sshd AssignedTo: openssh-bugs at mindrot.org

Hello, I have a strange (for me) problem with these two machines : - Client, a CentOS-5.7 workstation ; - Server, a CentOS-6.2 headless, up-to-date server. From Client, I want to use xauth on Server with the help of rsh (yes, I know, ssh and all this sort of things... another time.) When SELinux is in permissive mode on Server, all these commands perform as expected : rsh Server

Ever since I upgraded my laptop from FC15 to FC17, I've been getting this message when I ssh to some RHEL6 hosts inside Red Hat. In particular, I'm trying to do this: virt-viewer --connect \ qemu+ssh://kvm11.devlab.phx1.redhat.com/system \ bork-s01.candlepin.dev.devlab.phx1.redhat.com This is the message I get: X11 forwarding request failed on channel 0 A viewer window pops

Hi folks, I've got a problem with X11 forwarding on an AIX 5.2 system thats stumped me. I've installed the same patched + compiled installp package on all our aix boxes but one of them won't play ball with X11 ssh -X -v -v user at host gives (grepped out X11 looking lines) debug2: we sent a password packet, wait for reply debug1: Authentication succeeded (password). debug1:

Hello All, I set up ltsp regulary, on Centos6 machines. This morning I have a Selinux problem that usualy does not occur: after setting everything up, the thinclients boot, but nobody can login. It only works after the command : # echo 0 > /selinux/enforce I tried this semanage command: # semanage fcontext -a -t bin_t /usr/bin/xauth but it makes no difference. The message I'm now

Currently, ~/.ssh/environment can set static environment variables, and ~/.ssh/rc can run initialization routines. But there is no way for sshrc to propagate changes to the environment to the user's shell or command. There is, however, a possible way to do this. If the PermitUserEnvironment option is set, sshd could treat the stdout of sshrc as additional assignment lines of the form

On Fri, 26 Jun 2015 at 03:16 -0000, Alexandru Chiscan wrote: > On 06/25/2015 11:51 PM, Stuart Barkley wrote: > > Then from your desktop (assuming Linux already running X) in a > > local xterm do something like: > > > > ssh -Y remote-system > > Do not use that because any user logged on the server can connect to > your X server display and snoop what you

hi, eventually newbie: i want to show remote X-apps on my desktop. now, i know from google that xhost and xauth is not the way to so that very secure. now, i have a ssh_config with X forwarding enabled and a server with forwarding enabled, too. now when i connect to server i read that ssh creates automaticaly a Xauthory file. So i know that this is the xauth way with supercookies etc. but i

I've currently got a couple of boxes which obtain their IP address via DHCP, and as a consequence do not have a mapping in /etc/hosts for their own IP/name... but helpfully (!) they have their name mapping to 127.0.0.1 This breaks X authentication... - openssh (and also ssh) makes an apparently valid xauth entry, but all attempts to start clients gives "X11 connection rejected

When doing a make with the portable developer version, I came across this error: ssh/ssh_host_ecdsa_key|/opt/etc/ssh_host_ecdsa_key|g' -e 's|/etc/ssh/ssh_host_dsa_key|/opt/etc/ssh_host_dsa_key|g' -e 's|/etc/ssh/ssh_host_rsa_key|/opt/etc/ssh_host_rsa_key|g' -e 's|/var/run/sshd.pid|/var/run/sshd.pid|g' -e 's|/etc/moduli|/opt/etc/moduli|g' -e

On 13/10/2017 08:03, Damien Miller wrote: > On Thu, 12 Oct 2017, Michael Felt wrote: > >> On 08/10/2017 23:32, Michael Felt wrote: >>> On 04/10/2017 11:07, Michael Felt wrote: >>>> I do not often use X11 - but when I do I prefer to enable >>>> X11forwarding, and when finished - turn it off. This is preferable, >>>> imho, to having