Restore reading authorized_keys2 by default

Upstream seems to intend to gradually phase this out, so don't assume
that this will remain the default forever.  However, we were late in
adopting the upstream sshd_config changes, so it makes sense to extend
the grace period (closes: #852320).

2 files changed, 36 insertions, 0 deletions

diff --git a/debian/patches/restore-authorized_keys2.patch b/debian/patches/restore-authorized_keys2.patch
new file mode 100644
index 000000000..86da09c7e
--- /dev/null
+++ b/debian/patches/restore-authorized_keys2.patch
@@ -0,0 +1,35 @@
+From e18d2ba71e6bf009c53e65509da84b712c300471 Mon Sep 17 00:00:00 2001
+From: Colin Watson <cjwatson@debian.org>
+Date: Sun, 5 Mar 2017 02:02:11 +0000
+Subject: Restore reading authorized_keys2 by default
+
+Upstream seems to intend to gradually phase this out, so don't assume
+that this will remain the default forever.  However, we were late in
+adopting the upstream sshd_config changes, so it makes sense to extend
+the grace period.
+
+Bug-Debian: https://bugs.debian.org/852320
+Forwarded: not-needed
+Last-Update: 2017-03-05
+
+Patch-Name: restore-authorized_keys2.patch
+---
+ sshd_config | 5 ++---
+ 1 file changed, 2 insertions(+), 3 deletions(-)
+
+diff --git a/sshd_config b/sshd_config
+index 4aea6c72..bcf3ac17 100644
+--- a/sshd_config
++++ b/sshd_config
+@@ -36,9 +36,8 @@
+ 
+ #PubkeyAuthentication yes
+ 
+-# The default is to check both .ssh/authorized_keys and .ssh/authorized_keys2
+-# but this is overridden so installations will only check .ssh/authorized_keys
+-AuthorizedKeysFile     .ssh/authorized_keys
++# Expect .ssh/authorized_keys2 to be disregarded by default in future.
++#AuthorizedKeysFile    .ssh/authorized_keys .ssh/authorized_keys2
+ 
+ #AuthorizedPrincipalsFile none
+ 
diff --git a/debian/patches/series b/debian/patches/series
index 6eae81080..6f0004748 100644
--- a/debian/patches/series
+++ b/debian/patches/series
@@ -29,3 +29,4 @@ regress-forwarding-race.patch
 regress-mktemp.patch
 sandbox-x32-workaround.patch
 no-dsa-host-key-by-default.patch
+restore-authorized_keys2.patch