From d6b521372243b79105a1513d4559572dfab6db54 Mon Sep 17 00:00:00 2001 From: Micah Date: Tue, 22 Sep 2015 15:04:33 -0400 Subject: add clamav filtering, with sanesecurity signature updating and provider whitelisting (#3625) Change-Id: I15985ca00ee95bc62855f098a78e364ebbc32616 --- puppet/modules/clamav/files/01-leap.conf | 58 +++++++++++++++ puppet/modules/clamav/files/clamav-daemon_default | 8 ++ puppet/modules/clamav/files/clamav-milter_default | 14 ++++ puppet/modules/clamav/manifests/daemon.pp | 86 ++++++++++++++++++++++ puppet/modules/clamav/manifests/freshclam.pp | 21 ++++++ puppet/modules/clamav/manifests/init.pp | 8 ++ puppet/modules/clamav/manifests/milter.pp | 48 ++++++++++++ puppet/modules/clamav/manifests/unofficial_sigs.pp | 22 ++++++ .../clamav/templates/clamav-milter.conf.erb | 28 +++++++ puppet/modules/clamav/templates/local.pdb.erb | 1 + .../clamav/templates/whitelisted_addresses.erb | 5 ++ puppet/modules/site_postfix/manifests/mx.pp | 5 ++ 12 files changed, 304 insertions(+) create mode 100644 puppet/modules/clamav/files/01-leap.conf create mode 100644 puppet/modules/clamav/files/clamav-daemon_default create mode 100644 puppet/modules/clamav/files/clamav-milter_default create mode 100644 puppet/modules/clamav/manifests/daemon.pp create mode 100644 puppet/modules/clamav/manifests/freshclam.pp create mode 100644 puppet/modules/clamav/manifests/init.pp create mode 100644 puppet/modules/clamav/manifests/milter.pp create mode 100644 puppet/modules/clamav/manifests/unofficial_sigs.pp create mode 100644 puppet/modules/clamav/templates/clamav-milter.conf.erb create mode 100644 puppet/modules/clamav/templates/local.pdb.erb create mode 100644 puppet/modules/clamav/templates/whitelisted_addresses.erb (limited to 'puppet') diff --git a/puppet/modules/clamav/files/01-leap.conf b/puppet/modules/clamav/files/01-leap.conf new file mode 100644 index 00000000..abeeb302 --- /dev/null +++ b/puppet/modules/clamav/files/01-leap.conf @@ -0,0 +1,58 @@ +# If running clamd in "LocalSocket" mode (*NOT* in TCP/IP mode), and +# either "SOcket Cat" (socat) or the "IO::Socket::UNIX" perl module +# are installed on the system, and you want to report whether clamd +# is running or not, uncomment the "clamd_socket" variable below (you +# will be warned if neither socat nor IO::Socket::UNIX are found, but +# the script will still run). You will also need to set the correct +# path to your clamd socket file (if unsure of the path, check the +# "LocalSocket" setting in your clamd.conf file for socket location). +clamd_socket="/run/clamav/clamd.ctl" + +# If you would like to attempt to restart ClamD if detected not running, +# uncomment the next 2 lines. Confirm the path to the "clamd_lock" file +# (usually can be found in the clamd init script) and also enter the clamd +# start command for your particular distro for the "start_clamd" variable +# (the sample start command shown below should work for most linux distros). +# NOTE: these 2 variables are dependant on the "clamd_socket" variable +# shown above - if not enabled, then the following 2 variables will be +# ignored, whether enabled or not. +clamd_lock="/run/clamav/clamd.pid" +start_clamd="service clamav-daemon start" + +ss_dbs=" + junk.ndb + phish.ndb + rogue.hdb + sanesecurity.ftm + scam.ndb + sigwhitelist.ign2 + spamattach.hdb + spamimg.hdb + winnow.attachments.hdb + winnow_bad_cw.hdb + winnow_extended_malware.hdb + winnow_malware.hdb + winnow_malware_links.ndb + malwarehash.hsb + doppelstern.hdb + bofhland_cracked_URL.ndb + bofhland_malware_attach.hdb + bofhland_malware_URL.ndb + bofhland_phishing_URL.ndb + crdfam.clamav.hdb + phishtank.ndb + porcupine.ndb + spear.ndb + spearl.ndb +" + +# ======================== +# SecuriteInfo Database(s) +# ======================== +# Add or remove database file names between quote marks as needed. To +# disable any SecuriteInfo database downloads, remove the appropriate +# lines below. To disable all SecuriteInfo database file downloads, +# comment all of the following lines. +si_dbs="" + +mbl_dbs="" \ No newline at end of file diff --git a/puppet/modules/clamav/files/clamav-daemon_default b/puppet/modules/clamav/files/clamav-daemon_default new file mode 100644 index 00000000..b4cd6a4f --- /dev/null +++ b/puppet/modules/clamav/files/clamav-daemon_default @@ -0,0 +1,8 @@ +# This is a file designed only t0 set special environment variables +# eg TMP or TMPDIR. It is sourced from a shell script, so anything +# put in here must be in variable=value format, suitable for sourcing +# from a shell script. +# Examples: +# export TMPDIR=/dev/shm +export TMP=/var/tmp +export TMPDIR=/var/tmp diff --git a/puppet/modules/clamav/files/clamav-milter_default b/puppet/modules/clamav/files/clamav-milter_default new file mode 100644 index 00000000..5e33e822 --- /dev/null +++ b/puppet/modules/clamav/files/clamav-milter_default @@ -0,0 +1,14 @@ +# +# clamav-milter init options +# + +## SOCKET_RWGROUP +# by default, the socket created by the milter has permissions +# clamav:clamav:755. SOCKET_RWGROUP changes the group and changes the +# permissions to 775 to give read-write access to that group. +# +# If you are using postfix to speak to the milter, you have to give permission +# to the postfix group to write +# +SOCKET_RWGROUP=postfix +export TMPDIR=/var/tmp diff --git a/puppet/modules/clamav/manifests/daemon.pp b/puppet/modules/clamav/manifests/daemon.pp new file mode 100644 index 00000000..9aebf9b0 --- /dev/null +++ b/puppet/modules/clamav/manifests/daemon.pp @@ -0,0 +1,86 @@ +class clamav::daemon { + + $domain_hash = hiera('domain') + $domain = $domain_hash['full_suffix'] + + package { [ 'clamav-daemon', 'arj' ]: + ensure => installed; + } + + service { + 'clamav-daemon': + ensure => running, + name => clamav-daemon, + pattern => '/usr/sbin/clamd', + enable => true, + hasrestart => true, + subscribe => File['/etc/default/clamav-daemon']; + } + + file { + '/var/run/clamav': + ensure => directory, + mode => '0750', + owner => clamav, + group => postfix; + + '/var/lib/clamav': + mode => '0755', + owner => clamav, + group => clamav; + + '/etc/default/clamav-daemon': + source => 'puppet:///modules/clamav/clamav-daemon_default', + mode => '0644', + owner => root, + group => root; + + # this file contains additional domains that we want the clamav + # phishing process to look for (our domain) + '/var/lib/clamav/local.pdb': + content => template('clamav/local.pdb.erb'), + mode => '0644', + owner => clamav, + group => clamav; + } + + file_line { + 'clamav_daemon_tmp': + path => '/etc/clamav/clamd.conf', + line => 'TemporaryDirectory /var/tmp', + require => Package['clamav-daemon'], + notify => Service['clamav-daemon']; + + 'enable_phishscanurls': + path => '/etc/clamav/clamd.conf', + match => 'PhishingScanURLs no', + line => 'PhishingScanURLs yes', + require => Package['clamav-daemon'], + notify => Service['clamav-daemon']; + + 'clamav_LogSyslog_true': + path => '/etc/clamav/clamd.conf', + match => '^LogSyslog false', + line => 'LogSyslog true', + require => Package['clamav-daemon'], + notify => Service['clamav-daemon']; + + 'clamav_MaxThreads': + path => '/etc/clamav/clamd.conf', + match => 'MaxThreads 20', + line => 'MaxThreads 100', + require => Package['clamav-daemon'], + notify => Service['clamav-daemon']; + } + + # remove LogFile line + file_line { + 'clamav_LogFile': + path => '/etc/clamav/clamd.conf', + match => '^LogFile .*', + line => '', + require => Package['clamav-daemon'], + notify => Service['clamav-daemon']; + } + +} diff --git a/puppet/modules/clamav/manifests/freshclam.pp b/puppet/modules/clamav/manifests/freshclam.pp new file mode 100644 index 00000000..b9827ede --- /dev/null +++ b/puppet/modules/clamav/manifests/freshclam.pp @@ -0,0 +1,21 @@ +class clamav::freshclam { + + package { 'clamav-freshclam': ensure => installed } + + service { + 'freshclam': + ensure => running, + enable => true, + name => clamav-freshclam, + pattern => '/usr/bin/freshclam', + hasrestart => true; + } + + file_line { + 'freshclam_notify': + path => '/etc/clamav/freshclam.conf', + line => 'NotifyClamd /etc/clamav/clamd.conf', + notify => Service[freshclam]; + } + +} diff --git a/puppet/modules/clamav/manifests/init.pp b/puppet/modules/clamav/manifests/init.pp new file mode 100644 index 00000000..fa7b553c --- /dev/null +++ b/puppet/modules/clamav/manifests/init.pp @@ -0,0 +1,8 @@ +class clamav { + + include clamav::daemon + include clamav::milter + include clamav::sanesecurity + include clamav::freshclam + +} diff --git a/puppet/modules/clamav/manifests/milter.pp b/puppet/modules/clamav/manifests/milter.pp new file mode 100644 index 00000000..52ddaef1 --- /dev/null +++ b/puppet/modules/clamav/manifests/milter.pp @@ -0,0 +1,48 @@ +class clamav::milter { + + $clamav = hiera('clamav') + $whitelisted_addresses = $clamav['whitelisted_addresses'] + $domain_hash = hiera('domain') + $domain = $domain_hash['full_suffix'] + + package { 'clamav-milter': ensure => installed } + + service { + 'clamav-milter': + ensure => running, + enable => true, + name => clamav-milter, + pattern => '/usr/sbin/clamav-milter', + hasrestart => true, + subscribe => File['/etc/default/clamav-milter']; + } + + file { + '/run/clamav/milter.ctl': + mode => '0666', + owner => clamav, + group => postfix, + require => Class['clamav::daemon']; + + '/etc/clamav/clamav-milter.conf': + content => template('clamav/clamav-milter.conf.erb'), + mode => '0644', + owner => root, + group => root, + subscribe => Service['clamav-milter']; + + '/etc/default/clamav-milter': + source => 'puppet:///modules/clamav/clamav-milter_default', + mode => '0644', + owner => root, + group => root; + + '/etc/clamav/whitelisted_addresses': + content => template('clamav/whitelisted_addresses.erb'), + mode => '0644', + owner => root, + group => root; + + } + +} diff --git a/puppet/modules/clamav/manifests/unofficial_sigs.pp b/puppet/modules/clamav/manifests/unofficial_sigs.pp new file mode 100644 index 00000000..316154d3 --- /dev/null +++ b/puppet/modules/clamav/manifests/unofficial_sigs.pp @@ -0,0 +1,22 @@ +class clamav::unofficial_sigs { + + package { [ 'clamav-unofficial-sigs', 'wget', 'gnupg', + 'socat', 'rsync', 'curl' ]: + ensure => installed + } + + file { + '/var/log/clamav-unofficial-sigs.log': + ensure => file, + owner => clamav, + group => clamav, + require => Package['clamav-unofficial-sigs']; + + '/etc/clamav-unofficial-sigs.conf.d/01-leap.conf': + source => 'puppet:///modules/clamav/01-leap.conf', + mode => '0755', + owner => root, + group => root, + require => Package['clamav-unofficial-sigs']; + } +} diff --git a/puppet/modules/clamav/templates/clamav-milter.conf.erb b/puppet/modules/clamav/templates/clamav-milter.conf.erb new file mode 100644 index 00000000..9bf7099e --- /dev/null +++ b/puppet/modules/clamav/templates/clamav-milter.conf.erb @@ -0,0 +1,28 @@ +# THIS FILE MANAGED BY PUPPET +MilterSocket /var/run/clamav/milter.ctl +FixStaleSocket true +User clamav +MilterSocketGroup clamav +MilterSocketMode 666 +AllowSupplementaryGroups true +ReadTimeout 120 +Foreground false +PidFile /var/run/clamav/clamav-milter.pid +ClamdSocket unix:/var/run/clamav/clamd.ctl +OnClean Accept +OnInfected Reject +OnFail Defer +AddHeader Replace +LogSyslog true +LogFacility LOG_LOCAL6 +LogVerbose yes +LogInfected Basic +LogTime true +LogFileUnlock false +LogClean Off +LogRotate true +SupportMultipleRecipients false +MaxFileSize 10M +TemporaryDirectory /var/tmp +RejectMsg "Message refused due to content violation: %v - contact https://<%= @domain %>/tickets/new if this is in error" +Whitelist /etc/clamav/whitelisted_addresses diff --git a/puppet/modules/clamav/templates/local.pdb.erb b/puppet/modules/clamav/templates/local.pdb.erb new file mode 100644 index 00000000..9ea0584a --- /dev/null +++ b/puppet/modules/clamav/templates/local.pdb.erb @@ -0,0 +1 @@ +H:<%= @domain %> diff --git a/puppet/modules/clamav/templates/whitelisted_addresses.erb b/puppet/modules/clamav/templates/whitelisted_addresses.erb new file mode 100644 index 00000000..9e068ec5 --- /dev/null +++ b/puppet/modules/clamav/templates/whitelisted_addresses.erb @@ -0,0 +1,5 @@ +<%- if @whitelisted_addresses then -%> +<% @whitelisted_addresses.each do |name| -%> +From::<%= name %> +<% end -%> +<% end -%> diff --git a/puppet/modules/site_postfix/manifests/mx.pp b/puppet/modules/site_postfix/manifests/mx.pp index 42313d1a..f0a2554a 100644 --- a/puppet/modules/site_postfix/manifests/mx.pp +++ b/puppet/modules/site_postfix/manifests/mx.pp @@ -49,6 +49,10 @@ class site_postfix::mx { # alias map 'local_recipient_maps': value => '$alias_maps'; + 'smtpd_milters': + value => 'unix:/run/clamav/milter.ctl'; + 'milter_default_action': + value => 'accept'; } include site_postfix::mx::smtpd_checks @@ -57,6 +61,7 @@ class site_postfix::mx { include site_postfix::mx::smtpd_tls include site_postfix::mx::static_aliases include site_postfix::mx::rewrite_openpgp_header + include clamav # greater verbosity for debugging, take out for production #include site_postfix::debug -- cgit v1.2.3