Source: openssh Version: 1:6.7p1-5+deb8u6 Severity: normal Hi
DLA-1500-1 introduced the following regression: In cases where ForwardX11 is enabled, say globally for all via ssh_config, or via command line switch, but no DISPLAY is set (e.g. in cronjob), then newly a > DISPLAY "(null)" invalid; disabling X11 forwarding is issued. root@jessie-amd64:~# unset DISPLAY root@jessie-amd64:~# ssh -X root@localhost uname -a DISPLAY "(null)" invalid; disabling X11 forwarding Linux jessie-amd64 3.16.0-6-amd64 #1 SMP Debian 3.16.57-2 (2018-07-14) x86_64 GNU/Linux root@jessie-amd64:~# Downgrading to 1:6.7p1-5+deb8u5 fixes the problem: root@jessie-amd64:~# unset DISPLAY root@jessie-amd64:~# ssh -X root@localhost uname -a Linux jessie-amd64 3.16.0-6-amd64 #1 SMP Debian 3.16.57-2 (2018-07-14) x86_64 GNU/Linux root@jessie-amd64:~# This seem to be a specific regression in 1:6.7p1-5+deb8u6, the behaviour is not seen on either unstable (1:7.8p1-1) or stretch (1:7.4p1-10+deb9u4), so maybe one of the adressed issues misses a prerequisite commit? Regards, Salvatore
