1 files changed, 238 insertions, 0 deletions

diff --git a/debian/patches/debian-config.patch b/debian/patches/debian-config.patch
new file mode 100644
index 000000000..a3f595752
--- /dev/null
+++ b/debian/patches/debian-config.patch
@@ -0,0 +1,238 @@
+From 4847e512c0b94c615b838904a5f139a761bee284 Mon Sep 17 00:00:00 2001
+From: Colin Watson <cjwatson@debian.org>
+Date: Sun, 9 Feb 2014 16:10:18 +0000
+Subject: Various Debian-specific configuration changes
+
+ssh: Enable ForwardX11Trusted, returning to earlier semantics which cause
+fewer problems with existing setups (http://bugs.debian.org/237021).
+
+ssh: Set 'SendEnv LANG LC_*' by default (http://bugs.debian.org/264024).
+
+ssh: Enable HashKnownHosts by default to try to limit the spread of ssh
+worms.
+
+ssh: Enable GSSAPIAuthentication by default.
+
+sshd: Enable PAM, disable ChallengeResponseAuthentication, and disable
+PrintMotd.
+
+sshd: Enable X11Forwarding.
+
+sshd: Set 'AcceptEnv LANG LC_*' by default.
+
+sshd: Change sftp subsystem path to /usr/lib/openssh/sftp-server.
+
+Document all of this.
+
+Author: Russ Allbery <rra@debian.org>
+Forwarded: not-needed
+Last-Update: 2017-10-04
+
+Patch-Name: debian-config.patch
+---
+ readconf.c    |  2 +-
+ ssh.1         | 21 +++++++++++++++++++++
+ ssh_config    |  6 +++++-
+ ssh_config.5  | 19 ++++++++++++++++++-
+ sshd_config   | 16 ++++++++++------
+ sshd_config.5 | 22 ++++++++++++++++++++++
+ 6 files changed, 77 insertions(+), 9 deletions(-)
+
+diff --git a/readconf.c b/readconf.c
+index be3d5873..41f36aa8 100644
+--- a/readconf.c
++++ b/readconf.c
+@@ -1940,7 +1940,7 @@ fill_default_options(Options * options)
+        if (options->forward_x11 == -1)
+                options->forward_x11 = 0;
+        if (options->forward_x11_trusted == -1)
+-               options->forward_x11_trusted = 0;
++               options->forward_x11_trusted = 1;
+        if (options->forward_x11_timeout == -1)
+                options->forward_x11_timeout = 1200;
+        /*
+diff --git a/ssh.1 b/ssh.1
+index 711fe608..f1b01c56 100644
+--- a/ssh.1
++++ b/ssh.1
+@@ -764,6 +764,16 @@ directive in
+ .Xr ssh_config 5
+ for more information.
+ .Pp
++(Debian-specific: X11 forwarding is not subjected to X11 SECURITY extension
++restrictions by default, because too many programs currently crash in this
++mode.
++Set the
++.Cm ForwardX11Trusted
++option to
++.Dq no
++to restore the upstream behaviour.
++This may change in future depending on client-side improvements.)
++.Pp
+ .It Fl x
+ Disables X11 forwarding.
+ .Pp
+@@ -772,6 +782,17 @@ Enables trusted X11 forwarding.
+ Trusted X11 forwardings are not subjected to the X11 SECURITY extension
+ controls.
+ .Pp
++(Debian-specific: This option does nothing in the default configuration: it
++is equivalent to
++.Dq Cm ForwardX11Trusted No yes ,
++which is the default as described above.
++Set the
++.Cm ForwardX11Trusted
++option to
++.Dq no
++to restore the upstream behaviour.
++This may change in future depending on client-side improvements.)
++.Pp
+ .It Fl y
+ Send log information using the
+ .Xr syslog 3
+diff --git a/ssh_config b/ssh_config
+index bcb9f153..1b676fb2 100644
+--- a/ssh_config
++++ b/ssh_config
+@@ -17,9 +17,10 @@
+ # list of available options, their meanings and defaults, please see the
+ # ssh_config(5) man page.
+ 
+-# Host *
++Host *
+ #   ForwardAgent no
+ #   ForwardX11 no
++#   ForwardX11Trusted yes
+ #   PasswordAuthentication yes
+ #   HostbasedAuthentication no
+ #   GSSAPIAuthentication no
+@@ -46,3 +47,6 @@
+ #   VisualHostKey no
+ #   ProxyCommand ssh -q -W %h:%p gateway.example.com
+ #   RekeyLimit 1G 1h
++    SendEnv LANG LC_*
++    HashKnownHosts yes
++    GSSAPIAuthentication yes
+diff --git a/ssh_config.5 b/ssh_config.5
+index 1edfe761..2da7029a 100644
+--- a/ssh_config.5
++++ b/ssh_config.5
+@@ -71,6 +71,22 @@ Since the first obtained value for each parameter is used, more
+ host-specific declarations should be given near the beginning of the
+ file, and general defaults at the end.
+ .Pp
++Note that the Debian
++.Ic openssh-client
++package sets several options as standard in
++.Pa /etc/ssh/ssh_config
++which are not the default in
++.Xr ssh 1 :
++.Pp
++.Bl -bullet -offset indent -compact
++.It
++.Cm SendEnv No LANG LC_*
++.It
++.Cm HashKnownHosts No yes
++.It
++.Cm GSSAPIAuthentication No yes
++.El
++.Pp
+ The file contains keyword-argument pairs, one per line.
+ Lines starting with
+ .Ql #
+@@ -683,11 +699,12 @@ elapsed.
+ .It Cm ForwardX11Trusted
+ If this option is set to
+ .Cm yes ,
++(the Debian-specific default),
+ remote X11 clients will have full access to the original X11 display.
+ .Pp
+ If this option is set to
+ .Cm no
+-(the default),
++(the upstream default),
+ remote X11 clients will be considered untrusted and prevented
+ from stealing or tampering with data belonging to trusted X11
+ clients.
+diff --git a/sshd_config b/sshd_config
+index c01dd656..f68edf36 100644
+--- a/sshd_config
++++ b/sshd_config
+@@ -58,8 +58,9 @@ AuthorizedKeysFile    .ssh/authorized_keys
+ #PasswordAuthentication yes
+ #PermitEmptyPasswords no
+ 
+-# Change to no to disable s/key passwords
+-#ChallengeResponseAuthentication yes
++# Change to yes to enable challenge-response passwords (beware issues with
++# some PAM modules and threads)
++ChallengeResponseAuthentication no
+ 
+ # Kerberos options
+ #KerberosAuthentication no
+@@ -82,16 +83,16 @@ AuthorizedKeysFile  .ssh/authorized_keys
+ # If you just want the PAM account and session checks to run without
+ # PAM authentication, then enable this but set PasswordAuthentication
+ # and ChallengeResponseAuthentication to 'no'.
+-#UsePAM no
++UsePAM yes
+ 
+ #AllowAgentForwarding yes
+ #AllowTcpForwarding yes
+ #GatewayPorts no
+-#X11Forwarding no
++X11Forwarding yes
+ #X11DisplayOffset 10
+ #X11UseLocalhost yes
+ #PermitTTY yes
+-#PrintMotd yes
++PrintMotd no
+ #PrintLastLog yes
+ #TCPKeepAlive yes
+ #UseLogin no
+@@ -109,8 +110,11 @@ AuthorizedKeysFile .ssh/authorized_keys
+ # no default banner path
+ #Banner none
+ 
++# Allow client to pass locale environment variables
++AcceptEnv LANG LC_*
++
+ # override default of no subsystems
+-Subsystem      sftp    /usr/libexec/sftp-server
++Subsystem      sftp    /usr/lib/openssh/sftp-server
+ 
+ # Example of overriding settings on a per-user basis
+ #Match User anoncvs
+diff --git a/sshd_config.5 b/sshd_config.5
+index 79676a95..16be4f62 100644
+--- a/sshd_config.5
++++ b/sshd_config.5
+@@ -55,6 +55,28 @@ Arguments may optionally be enclosed in double quotes
+ .Pq \&"
+ in order to represent arguments containing spaces.
+ .Pp
++Note that the Debian
++.Ic openssh-server
++package sets several options as standard in
++.Pa /etc/ssh/sshd_config
++which are not the default in
++.Xr sshd 8 :
++.Pp
++.Bl -bullet -offset indent -compact
++.It
++.Cm ChallengeResponseAuthentication No no
++.It
++.Cm X11Forwarding No yes
++.It
++.Cm PrintMotd No no
++.It
++.Cm AcceptEnv No LANG LC_*
++.It
++.Cm Subsystem No sftp /usr/lib/openssh/sftp-server
++.It
++.Cm UsePAM No yes
++.El
++.Pp
+ The possible
+ keywords and their meanings are as follows (note that
+ keywords are case-insensitive and arguments are case-sensitive):