Merge 6.7p1.

  * New upstream release (http://www.openssh.com/txt/release-6.7):
    - sshd(8): The default set of ciphers and MACs has been altered to
      remove unsafe algorithms.  In particular, CBC ciphers and arcfour* are
      disabled by default.  The full set of algorithms remains available if
      configured explicitly via the Ciphers and MACs sshd_config options.
    - ssh(1), sshd(8): Add support for Unix domain socket forwarding.  A
      remote TCP port may be forwarded to a local Unix domain socket and
      vice versa or both ends may be a Unix domain socket (closes: #236718).
    - ssh(1), ssh-keygen(1): Add support for SSHFP DNS records for ED25519
      key types.
    - sftp(1): Allow resumption of interrupted uploads.
    - ssh(1): When rekeying, skip file/DNS lookups of the hostkey if it is
      the same as the one sent during initial key exchange.
    - sshd(8): Allow explicit ::1 and 127.0.0.1 forwarding bind addresses
      when GatewayPorts=no; allows client to choose address family.
    - sshd(8): Add a sshd_config PermitUserRC option to control whether
      ~/.ssh/rc is executed, mirroring the no-user-rc authorized_keys
      option.
    - ssh(1): Add a %C escape sequence for LocalCommand and ControlPath that
      expands to a unique identifer based on a hash of the tuple of (local
      host, remote user, hostname, port).  Helps avoid exceeding miserly
      pathname limits for Unix domain sockets in multiplexing control paths.
    - sshd(8): Make the "Too many authentication failures" message include
      the user, source address, port and protocol in a format similar to the
      authentication success / failure messages.
    - Use CLOCK_BOOTTIME in preference to CLOCK_MONOTONIC when it is
      available. It considers time spent suspended, thereby ensuring
      timeouts (e.g. for expiring agent keys) fire correctly (closes:
      #734553).
    - Use prctl() to prevent sftp-server from accessing
      /proc/self/{mem,maps}.
  * Restore TCP wrappers support, removed upstream in 6.7.  It is true that
    dropping this reduces preauth attack surface in sshd.  On the other
    hand, this support seems to be quite widely used, and abruptly dropping
    it (from the perspective of users who don't read openssh-unix-dev) could
    easily cause more serious problems in practice.  It's not entirely clear
    what the right long-term answer for Debian is, but it at least probably
    doesn't involve dropping this feature shortly before a freeze.
  * Replace patch to disable OpenSSL version check with an updated version
    of Kurt Roeckx's patch from #732940 to just avoid checking the status
    field.

1 files changed, 172 insertions, 0 deletions

diff --git a/debian/patches/restore-tcp-wrappers.patch b/debian/patches/restore-tcp-wrappers.patch
new file mode 100644
index 000000000..c590f52ce
--- /dev/null
+++ b/debian/patches/restore-tcp-wrappers.patch
@@ -0,0 +1,172 @@
+From b25d6dd3b6b5a2cb93723586c56d6fa0277ea56a Mon Sep 17 00:00:00 2001
+From: Colin Watson <cjwatson@debian.org>
+Date: Tue, 7 Oct 2014 13:22:41 +0100
+Subject: Restore TCP wrappers support
+
+Support for TCP wrappers was dropped in OpenSSH 6.7.  See this message
+and thread:
+
+  https://lists.mindrot.org/pipermail/openssh-unix-dev/2014-April/032497.html
+
+It is true that this reduces preauth attack surface in sshd.  On the
+other hand, this support seems to be quite widely used, and abruptly
+dropping it (from the perspective of users who don't read
+openssh-unix-dev) could easily cause more serious problems in practice.
+
+It's not entirely clear what the right long-term answer for Debian is,
+but it at least probably doesn't involve dropping this feature shortly
+before a freeze.
+
+Forwarded: not-needed
+Last-Update: 2014-10-07
+
+Patch-Name: restore-tcp-wrappers.patch
+---
+ configure.ac | 57 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+ sshd.8       |  7 +++++++
+ sshd.c       | 25 +++++++++++++++++++++++++
+ 3 files changed, 89 insertions(+)
+
+diff --git a/configure.ac b/configure.ac
+index 90e81e1..7f160f1 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -1404,6 +1404,62 @@ AC_ARG_WITH([skey],
+        ]
+ )
+ 
++# Check whether user wants TCP wrappers support
++TCPW_MSG="no"
++AC_ARG_WITH([tcp-wrappers],
++       [  --with-tcp-wrappers[[=PATH]] Enable tcpwrappers support (optionally in PATH)],
++       [
++               if test "x$withval" != "xno" ; then
++                       saved_LIBS="$LIBS"
++                       saved_LDFLAGS="$LDFLAGS"
++                       saved_CPPFLAGS="$CPPFLAGS"
++                       if test -n "${withval}" && \
++                           test "x${withval}" != "xyes"; then
++                               if test -d "${withval}/lib"; then
++                                       if test -n "${need_dash_r}"; then
++                                               LDFLAGS="-L${withval}/lib -R${withval}/lib ${LDFLAGS}"
++                                       else
++                                               LDFLAGS="-L${withval}/lib ${LDFLAGS}"
++                                       fi
++                               else
++                                       if test -n "${need_dash_r}"; then
++                                               LDFLAGS="-L${withval} -R${withval} ${LDFLAGS}"
++                                       else
++                                               LDFLAGS="-L${withval} ${LDFLAGS}"
++                                       fi
++                               fi
++                               if test -d "${withval}/include"; then
++                                       CPPFLAGS="-I${withval}/include ${CPPFLAGS}"
++                               else
++                                       CPPFLAGS="-I${withval} ${CPPFLAGS}"
++                               fi
++                       fi
++                       LIBS="-lwrap $LIBS"
++                       AC_MSG_CHECKING([for libwrap])
++                       AC_LINK_IFELSE([AC_LANG_PROGRAM([[
++#include <sys/types.h>
++#include <sys/socket.h>
++#include <netinet/in.h>
++#include <tcpd.h>
++int deny_severity = 0, allow_severity = 0;
++                               ]], [[
++       hosts_access(0);
++                               ]])], [
++                                       AC_MSG_RESULT([yes])
++                                       AC_DEFINE([LIBWRAP], [1],
++                                               [Define if you want
++                                               TCP Wrappers support])
++                                       SSHDLIBS="$SSHDLIBS -lwrap"
++                                       TCPW_MSG="yes"
++                               ], [
++                                       AC_MSG_ERROR([*** libwrap missing])
++                               
++                       ])
++                       LIBS="$saved_LIBS"
++               fi
++       ]
++)
++
+ # Check whether user wants to use ldns
+ LDNS_MSG="no"
+ AC_ARG_WITH(ldns,
+@@ -4853,6 +4909,7 @@ echo "                 KerberosV support: $KRB5_MSG"
+ echo "                   SELinux support: $SELINUX_MSG"
+ echo "                 Smartcard support: $SCARD_MSG"
+ echo "                     S/KEY support: $SKEY_MSG"
++echo "              TCP Wrappers support: $TCPW_MSG"
+ echo "              MD5 password support: $MD5_MSG"
+ echo "                   libedit support: $LIBEDIT_MSG"
+ echo "  Solaris process contract support: $SPC_MSG"
+diff --git a/sshd.8 b/sshd.8
+index 01459d6..eaeac45 100644
+--- a/sshd.8
++++ b/sshd.8
+@@ -851,6 +851,12 @@ the user's home directory becomes accessible.
+ This file should be writable only by the user, and need not be
+ readable by anyone else.
+ .Pp
++.It Pa /etc/hosts.allow
++.It Pa /etc/hosts.deny
++Access controls that should be enforced by tcp-wrappers are defined here.
++Further details are described in
++.Xr hosts_access 5 .
++.Pp
+ .It Pa /etc/hosts.equiv
+ This file is for host-based authentication (see
+ .Xr ssh 1 ) .
+@@ -954,6 +960,7 @@ The content of this file is not sensitive; it can be world-readable.
+ .Xr ssh-keygen 1 ,
+ .Xr ssh-keyscan 1 ,
+ .Xr chroot 2 ,
++.Xr hosts_access 5 ,
+ .Xr login.conf 5 ,
+ .Xr moduli 5 ,
+ .Xr sshd_config 5 ,
+diff --git a/sshd.c b/sshd.c
+index e6706a8..3a6be65 100644
+--- a/sshd.c
++++ b/sshd.c
+@@ -127,6 +127,13 @@
+ #include <Security/AuthSession.h>
+ #endif
+ 
++#ifdef LIBWRAP
++#include <tcpd.h>
++#include <syslog.h>
++int allow_severity;
++int deny_severity;
++#endif /* LIBWRAP */
++
+ #ifndef O_NOCTTY
+ #define O_NOCTTY       0
+ #endif
+@@ -2061,6 +2068,24 @@ main(int ac, char **av)
+ #ifdef SSH_AUDIT_EVENTS
+        audit_connection_from(remote_ip, remote_port);
+ #endif
++#ifdef LIBWRAP
++       allow_severity = options.log_facility|LOG_INFO;
++       deny_severity = options.log_facility|LOG_WARNING;
++       /* Check whether logins are denied from this host. */
++       if (packet_connection_is_on_socket()) {
++               struct request_info req;
++
++               request_init(&req, RQ_DAEMON, __progname, RQ_FILE, sock_in, 0);
++               fromhost(&req);
++
++               if (!hosts_access(&req)) {
++                       debug("Connection refused by tcp wrapper");
++                       refuse(&req);
++                       /* NOTREACHED */
++                       fatal("libwrap refuse returns");
++               }
++       }
++#endif /* LIBWRAP */
+ 
+        /* Log the connection. */
+        verbose("Connection from %s port %d on %s port %d",