Merge tag 'v0.26'

v0.26 (January 18, 2018)
------------------------

Security:

* HTTPS, IMAP, and POP's TLS settings have been updated to Mozilla's intermediate cipher list recommendation. Some extremely old devices that use less secure TLS ciphers may no longer be able to connect to IMAP/POP.
* Updated web HSTS header to use longer six month duration.

Mail:

* Adding attachments in Roundcube broke after the last update for some users after rebooting because a temporary directory was deleted on reboot. The temporary directory is now moved from /tmp to /var so that it is persistent.
* `X-Spam-Score` header is added to incoming mail.

Control panel:

* RSASHA256 is now used for DNSSEC for .lv domains.
* Some documentation/links improvements.

Installer:

* We now run `apt-get autoremove` at the start of setup to clear out old packages, especially old kernels that take up a lot of space. On the first run, this step may take a long time.
* We now fetch Z-Push from its tagged git repository, fixing an installation problem.
* Some old PHP5 packages are removed from setup, fixing an installation bug where Apache would get installed.
* Python 3 packages for the control panel are now installed using a virtualenv to prevent installation errors.

CHANGELOG.md

@@ -1,6 +1,31 @@
 CHANGELOG
 =========
 
+v0.26 (January 18, 2018)
+------------------------
+
+Security:
+
+* HTTPS, IMAP, and POP's TLS settings have been updated to Mozilla's intermediate cipher list recommendation. Some extremely old devices that use less secure TLS ciphers may no longer be able to connect to IMAP/POP.
+* Updated web HSTS header to use longer six month duration.
+
+Mail:
+
+* Adding attachments in Roundcube broke after the last update for some users after rebooting because a temporary directory was deleted on reboot. The temporary directory is now moved from /tmp to /var so that it is persistent.
+* `X-Spam-Score` header is added to incoming mail.
+
+Control panel:
+
+* RSASHA256 is now used for DNSSEC for .lv domains.
+* Some documentation/links improvements.
+
+Installer:
+
+* We now run `apt-get autoremove` at the start of setup to clear out old packages, especially old kernels that take up a lot of space. On the first run, this step may take a long time.
+* We now fetch Z-Push from its tagged git repository, fixing an installation problem.
+* Some old PHP5 packages are removed from setup, fixing an installation bug where Apache would get installed.
+* Python 3 packages for the control panel are now installed using a virtualenv to prevent installation errors.
+
 v0.25 (November 15, 2017)
 -------------------------
 
@@ -12,7 +37,7 @@ Mail:
 
 Control Panel:
 
-* Fix DNS validation to allow wildcard custom DNS entries to be set.
+* Allow custom DNS records to be set for DNS wildcard subdomains (i.e. `*`).
 
 v0.24 (October 3, 2017)
 -----------------------

README.md

@@ -36,7 +36,7 @@ Quick Install
 git clone https://github.com/jirislav/mailinabox.git
 cd mailinabox
 
-git checkout v0.25-ubuntu16
+git checkout v0.26-ubuntu16
 
 # Run installation
 setup/start.sh

conf/management-initscript

@@ -14,7 +14,7 @@
 PATH=/sbin:/usr/sbin:/bin:/usr/bin
 DESC="Mail-in-a-Box Management Daemon"
 NAME=mailinabox
-DAEMON=/usr/local/bin/mailinabox-daemon
+DAEMON=/usr/local/lib/mailinabox/start
 PIDFILE=/var/run/$NAME.pid
 SCRIPTNAME=/etc/init.d/$NAME
 

conf/nginx-primaryonly.conf

@@ -12,7 +12,6 @@
 		add_header X-Frame-Options "DENY";
 		add_header X-Content-Type-Options nosniff;
 		add_header Content-Security-Policy "frame-ancestors 'none';";
-		add_header Strict-Transport-Security max-age=31536000;
 	}
 
 	# Nextcloud configuration.

conf/nginx-ssl.conf

@@ -1,5 +1,5 @@
-# from: https://gist.github.com/konklone/6532544
-###################################################################################
+# from https://gist.github.com/konklone/6532544 and https://mozilla.github.io/server-side-tls/ssl-config-generator/
+###################################################################################################################
 
 # Basically the nginx configuration I use at konklone.com. 
 # I check it using https://www.ssllabs.com/ssltest/analyze.html?d=konklone.com
@@ -29,17 +29,17 @@
 
 # ssl_prefer_server_ciphers is enabled by default, which causes error with duplicate settings if enabled here again
 #ssl_prefer_server_ciphers on;
-ssl_ciphers 'kEECDH+ECDSA+AES128 kEECDH+ECDSA+AES256 kEECDH+AES128 kEECDH+AES256 kEDH+AES128 kEDH+AES256 DES-CBC3-SHA +SHA !aNULL !eNULL !LOW !MD5 !EXP !DSS !PSK !SRP !kECDH !CAMELLIA !RC4 !SEED';
+ssl_ciphers 'ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA:ECDHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA256:DHE-RSA-AES256-SHA:ECDHE-ECDSA-DES-CBC3-SHA:ECDHE-RSA-DES-CBC3-SHA:EDH-RSA-DES-CBC3-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:DES-CBC3-SHA:!DSS';
 
 # Cut out (the old, broken) SSLv3 entirely. 
 # This **excludes IE6 users** and (apparently) Yandexbot.
 # Just comment out if you need to support IE6, bless your soul.
 ssl_protocols TLSv1.2 TLSv1.1 TLSv1;
 
-# Turn on session resumption, using a 10 min cache shared across nginx processes,
+# Turn on session resumption, using a cache shared across nginx processes,
 # as recommended by http://nginx.org/en/docs/http/configuring_https_servers.html
-ssl_session_cache   shared:SSL:10m;
-ssl_session_timeout 10m;
+ssl_session_cache shared:SSL:50m;
+ssl_session_timeout 1d;
 #keepalive_timeout   70; # in Ubuntu 14.04/nginx 1.4.6 the default is 65, so plenty good
 
 # Buffer size of 1400 bytes fits in one MTU.

management/backup.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python3
+#!/usr/local/lib/mailinabox/env/bin/python
 
 # This script performs a backup of all user data:
 # 1) System services are stopped.

management/daemon.py

@@ -1,5 +1,3 @@
-#!/usr/bin/python3
-
 import os, os.path, re, json, time
 import subprocess
 

management/dns_update.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python3
+#!/usr/local/lib/mailinabox/env/bin/python
 
 # Creates DNS zone files for all of the domains of all of the mail users
 # and mail aliases and restarts nsd.
@@ -528,12 +528,13 @@ def write_nsd_conf(zonefiles, additional_records, env):
 
 def dnssec_choose_algo(domain, env):
 	if '.' in domain and domain.rsplit('.')[-1] in \
-		("email", "guide", "fund", "be"):
+		("email", "guide", "fund", "be", "lv"):
 		# At GoDaddy, RSASHA256 is the only algorithm supported
 		# for .email and .guide.
 		# A variety of algorithms are supported for .fund. This
 		# is preferred.
 		# Gandi tells me that .be does not support RSASHA1-NSEC3-SHA1
+        # Nic.lv does not support RSASHA1-NSEC3-SHA1 for .lv tld's
 		return "RSASHA256"
 
 	# For any domain we were able to sign before, don't change the algorithm

management/email_administrator.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python3
+#!/usr/local/lib/mailinabox/env/bin/python
 
 # Reads in STDIN. If the stream is not empty, mail it to the system administrator.
 

management/mail_log.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python3
+#!/usr/local/lib/mailinabox/env/bin/python
 import argparse
 import datetime
 import gzip

management/mailconfig.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python3
+#!/usr/local/lib/mailinabox/env/bin/python
 
 import subprocess, shutil, os, sqlite3, re
 import utils

management/ssl_certificates.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python3
+#!/usr/local/lib/mailinabox/env/bin/python
 # Utilities for installing and selecting SSL certificates.
 
 import os, os.path, re, shutil

management/status_checks.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python3
+#!/usr/local/lib/mailinabox/env/bin/python
 #
 # Checks that the upstream DNS has been set correctly and that
 # TLS certificates have been signed, etc., and if not tells the user

management/templates/custom-dns.html

@@ -31,8 +31,8 @@ <h3>Set custom DNS records</h3>
     <label for="customdnsType" class="col-sm-1 control-label">Type</label>
     <div class="col-sm-10">
       <select id="customdnsType" class="form-control" style="max-width: 400px" onchange="show_customdns_rtype_hint()">
-        <option value="A" data-hint="Enter an IPv4 address (i.e. a dotted quad, such as 123.456.789.012).">A (IPv4 address)</option>
-        <option value="AAAA" data-hint="Enter an IPv6 address.">AAAA (IPv6 address)</option>
+        <option value="A" data-hint="Enter an IPv4 address (i.e. a dotted quad, such as 123.456.789.012).  The 'local' alias sets the record to this box's public IPv4 address.">A (IPv4 address)</option>
+        <option value="AAAA" data-hint="Enter an IPv6 address.  The 'local' alias sets the record to this box's public IPv6 address.">AAAA (IPv6 address)</option>
         <option value="CAA" data-hint="Enter a CA that can issue certificates for this domain in the form of FLAG TAG VALUE. (0 issuewild &quot;letsencrypt.org&quot;)">CAA (Certificate Authority Authorization)</option>
         <option value="CNAME" data-hint="Enter another domain name followed by a period at the end (e.g. mypage.github.io.).">CNAME (DNS forwarding)</option>
         <option value="TXT" data-hint="Enter arbitrary text.">TXT (text record)</option>

management/templates/sync-guide.html

@@ -30,7 +30,7 @@ <h4>On your mobile device</h4>
 
 			<table class="table">
 			<thead><tr><th>For...</th> <th>Use...</th></tr></thead>
-			<tr><td>Contacts and Calendar</td> <td><a href="https://play.google.com/store/apps/details?id=at.bitfire.davdroid">DAVdroid</a> ($3.69; free <a href="https://f-droid.org/repository/browse/?fdfilter=dav&fdid=at.bitfire.davdroid">here</a>)</td></tr>
+			<tr><td>Contacts and Calendar</td> <td><a href="https://play.google.com/store/apps/details?id=at.bitfire.davdroid">DAVdroid</a> ($3.69; free <a href="https://f-droid.org/packages/at.bitfire.davdroid/">here</a>)</td></tr>
 			<tr><td>Only Contacts</td> <td><a href="https://play.google.com/store/apps/details?id=org.dmfs.carddav.sync">CardDAV-Sync free beta</a> (free)</td></tr>
 			<tr><td>Only Calendar</td> <td><a href="https://play.google.com/store/apps/details?id=org.dmfs.caldav.lib">CalDAV-Sync</a> ($2.89)</td></tr>
 			</table>

management/web_update.py

@@ -158,9 +158,9 @@ def hashfile(filepath):
 
 	# Add the HSTS header.
 	if hsts == "yes":
-		nginx_conf_extra += "add_header Strict-Transport-Security max-age=31536000;\n"
+		nginx_conf_extra += "add_header Strict-Transport-Security max-age=15768000;\n"
 	elif hsts == "preload":
-		nginx_conf_extra += "add_header Strict-Transport-Security \"max-age=10886400; includeSubDomains; preload\";\n"
+		nginx_conf_extra += "add_header Strict-Transport-Security \"max-age=15768000; includeSubDomains; preload\";\n"
 
 	# Add in any user customizations in the includes/ folder.
 	nginx_conf_custom_include = os.path.join(env["STORAGE_ROOT"], "www", safe_domain_name(domain) + ".conf")

security.md

@@ -40,21 +40,14 @@ The services all follow these rules:
 
 * TLS certificates are generated with 2048-bit RSA keys and SHA-256 fingerprints. The box provides a self-signed certificate by default. The [setup guide](https://mailinabox.email/guide.html) explains how to verify the certificate fingerprint on first login. Users are encouraged to replace the certificate with a proper CA-signed one. ([source](setup/ssl.sh))
 * Only TLSv1, TLSv1.1 and TLSv1.2 are offered (the older SSL protocols are not offered).
-* Export-grade ciphers, the anonymous DH/ECDH algorithms (aNULL), and clear-text ciphers (eNULL) are not offered.
-* The minimum cipher key length offered is 112 bits. The maximum is 256 bits. Diffie-Hellman ciphers use a 2048-bit key for forward secrecy.
+* HTTPS, IMAP, and POP track the [Mozilla Intermediate Ciphers Recommendation](https://wiki.mozilla.org/Security/Server_Side_TLS), balancing security with supporting a wide range of mail clients. Diffie-Hellman ciphers use a 2048-bit key for forward secrecy. For more details, see the [output of SSLyze for these ports](tests/tls_results.txt).
+* SMTP (port 25) uses the Postfix medium grade ciphers and SMTP Submission (port 587) uses the Postfix high grade ciphers ([more info](http://www.postfix.org/postconf.5.html#smtpd_tls_mandatory_ciphers)).
 
 Additionally:
 
 * SMTP Submission (port 587) will not accept user credentials without STARTTLS (true also of SMTP on port 25 in case of client misconfiguration), and the submission port won't accept mail without encryption. The minimum cipher key length is 128 bits. (The box is of course configured not to be an open relay. User credentials are required to send outbound mail.) ([source](setup/mail-postfix.sh))
 * HTTPS (port 443): The HTTPS Strict Transport Security header is set. A redirect from HTTP to HTTPS is offered. The [Qualys SSL Labs test](https://www.ssllabs.com/ssltest) should report an A+ grade. ([source 1](conf/nginx-ssl.conf), [source 2](conf/nginx.conf))
 
-For more details, see the [output of SSLyze for these ports](tests/tls_results.txt).
-
-The cipher and protocol selection are chosen to support the following clients:
-
-* For HTTPS: Firefox 1, Chrome 1, IE 7, Opera 5, Safari 1, Windows XP IE8, Android 2.3, Java 7.
-* For other protocols: TBD.
-
 ### Password Storage
 
 The passwords for mail users are stored on disk using the [SHA512-CRYPT](http://man7.org/linux/man-pages/man3/crypt.3.html) hashing scheme. ([source](management/mailconfig.py))

setup/bootstrap.sh

@@ -7,7 +7,7 @@
 #########################################################
 
 if [ -z "$TAG" ]; then
-	TAG=v0.25
+	TAG=v0.26
 fi
 
 # Are we running as root?

setup/mail-dovecot.sh

@@ -85,7 +85,7 @@ tools/editconf.py /etc/dovecot/conf.d/10-ssl.conf \
 	"ssl_cert=<$STORAGE_ROOT/ssl/ssl_certificate.pem" \
 	"ssl_key=<$STORAGE_ROOT/ssl/ssl_private_key.pem" \
 	"ssl_protocols=!SSLv3 !SSLv2" \
-	"ssl_cipher_list=TLSv1+HIGH !SSLv2 !RC4 !aNULL !eNULL !3DES @STRENGTH" \
+	"ssl_cipher_list=ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA:ECDHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA256:DHE-RSA-AES256-SHA:ECDHE-ECDSA-DES-CBC3-SHA:ECDHE-RSA-DES-CBC3-SHA:EDH-RSA-DES-CBC3-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:DES-CBC3-SHA:!DSS" \
 	"ssl_prefer_server_ciphers = yes" \
 	"ssl_dh_parameters_length = 2048"
 

setup/management.sh

@@ -6,21 +6,33 @@ echo "Installing Mail-in-a-Box system management daemon..."
 
 # DEPENDENCIES
 
-# Install Python packages that are available from the Ubuntu
-# apt repository:
-# flask, yaml, dnspython, and dateutil are all for our Python 3 management daemon itself.
-# duplicity does backups. python-pip is so we can 'pip install boto' for Python 2, for duplicity, so it can do backups to AWS S3.
-apt_install python3-flask links duplicity libyaml-dev python3-dnspython python3-dateutil python-pip
+# duplicity is used to make backups of user data. It uses boto
+# (via Python 2) to do backups to AWS S3. boto from the Ubuntu
+# package manager is too out-of-date -- it doesn't support the newer
+# S3 api used in some regions, which breaks backups to those regions.
+# See #627, #653.
+apt_install duplicity python-pip
+hide_output pip2 install --upgrade boto
 
-# These are required to pip install cryptography.
-apt_install build-essential libssl-dev libffi-dev python3-dev
+# These are required to build/install the cryptography Python package
+# used by our management daemon.
+apt_install python-virtualenv build-essential libssl-dev libffi-dev python3-dev
+
+# Create a virtualenv for the installation of Python 3 packages
+# used by the management daemon.
+inst_dir=/usr/local/lib/mailinabox
+mkdir -p $inst_dir
+venv=$inst_dir/env
+if [ ! -d $venv ]; then
+	virtualenv -ppython3 $venv
+fi
 
-# pip<6.1 + setuptools>=34 have a problem with packages that
+# pip<6.1 + setuptools>=34 had a problem with packages that
 # try to update setuptools during installation, like cryptography.
 # See https://github.com/pypa/pip/issues/4253. The Ubuntu 14.04
-# package versions are pip 1.5.4 and setuptools 3.3. When we
-# install cryptography under those versions, it tries to update
-# setuptools to version 34, which now creates the conflict, and
+# package versions are pip 1.5.4 and setuptools 3.3. When we used to
+# instal cryptography system-wide under those versions, it updated
+# setuptools to version 34, which created the conflict, and
 # then pip gets permanently broken with errors like
 # "ImportError: No module named 'packaging'".
 #
@@ -35,26 +47,20 @@ fi
 # The easiest work-around on systems that aren't already broken is
 # to upgrade pip (to >=9.0.1) and setuptools (to >=34.1) individually
 # before we install any package that tries to update setuptools.
-hide_output pip3 install --upgrade pip
-hide_output pip3 install --upgrade setuptools
+hide_output $venv/bin/pip install --upgrade pip
+hide_output $venv/bin/pip install --upgrade setuptools
 
 # Install other Python 3 packages used by the management daemon.
 # The first line is the packages that Josh maintains himself!
 # NOTE: email_validator is repeated in setup/questions.sh, so please keep the versions synced.
 # Force acme to be updated because it seems to need it after the
 # pip/setuptools breakage (see above) and the ACME protocol may
 # have changed (I got an error on one of my systems).
-hide_output pip3 install --upgrade \
+hide_output $venv/bin/pip install --upgrade \
 	rtyaml "email_validator>=1.0.0" "free_tls_certificates>=0.1.3" "exclusiveprocess" \
+	flask dnspython python-dateutil \
 	"idna>=2.0.0" "cryptography>=1.0.2" acme boto psutil
 
-# duplicity uses python 2 so we need to get the python 2 package of boto to have backups to S3.
-# boto from the Ubuntu package manager is too out-of-date -- it doesn't support the newer
-# S3 api used in some regions, which breaks backups to those regions.  See #627, #653.
-# But first we need to install setuptools for Ubuntu 16.04 compatibility
-hide_output pip2 install --upgrade setuptools
-hide_output pip2 install --upgrade boto
-
 # CONFIGURATION
 
 # Create a backup directory and a random key for encrypting backups.
@@ -67,7 +73,7 @@ fi
 # Download jQuery and Bootstrap local files
 
 # Make sure we have the directory to save to.
-assets_dir=/usr/local/lib/mailinabox/vendor/assets
+assets_dir=$inst_dir/vendor/assets
 rm -rf $assets_dir
 mkdir -p $assets_dir
 
@@ -84,16 +90,19 @@ bootstrap_url=https://github.com/twbs/bootstrap/releases/download/v$bootstrap_ve
 
 # Get Bootstrap
 wget_verify $bootstrap_url e6b1000b94e835ffd37f4c6dcbdad43f4b48a02a /tmp/bootstrap.zip || exit 1
-unzip -q /tmp/bootstrap.zip -d /usr/local/lib/mailinabox/vendor/assets
-mv /usr/local/lib/mailinabox/vendor/assets/bootstrap-$bootstrap_version-dist /usr/local/lib/mailinabox/vendor/assets/bootstrap
+unzip -q /tmp/bootstrap.zip -d $assets_dir
+mv $assets_dir/bootstrap-$bootstrap_version-dist $assets_dir/bootstrap
 rm -f /tmp/bootstrap.zip
 
-# Link the management server daemon into a well known location.
-rm -f /usr/local/bin/mailinabox-daemon
-ln -s `pwd`/management/daemon.py /usr/local/bin/mailinabox-daemon
-
 # Create an init script to start the management daemon and keep it
 # running after a reboot.
+rm -f /usr/local/bin/mailinabox-daemon # old path
+cat > $inst_dir/start <<EOF;
+#!/bin/bash
+source $venv/bin/activate
+python `pwd`/management/daemon.py
+EOF
+chmod +x $inst_dir/start
 rm -f /etc/init.d/mailinabox
 ln -s $(pwd)/conf/management-initscript /etc/init.d/mailinabox
 hide_output update-rc.d mailinabox defaults

setup/spamassassin.sh

@@ -61,10 +61,11 @@ tools/editconf.py /etc/default/spampd \
 # content or execute scripts, and it is probably confusing to most users.
 #
 # Tell Spamassassin not to modify the original message except for adding
-# the X-Spam-Status mail header and related headers.
+# the X-Spam-Status & X-Spam-Score mail headers and related headers.
 tools/editconf.py /etc/spamassassin/local.cf -s \
 	report_safe=0 \
-	add_header="all Report _REPORT_"
+	add_header="all Report _REPORT_" \
+    add_header="all Score _SCORE_"
 
 # Bayesean learning
 # -----------------