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authorMicah <micah@leap.se>2015-09-22 15:04:33 -0400
committerMicah <micah@leap.se>2015-10-13 10:01:39 -0400
commitd6b521372243b79105a1513d4559572dfab6db54 (patch)
treec54d7433278c2a5b89ea5e2b47e5332efa79d912 /puppet
parentb748aeffbdd72d50a7665b9c21c96a9750a840c0 (diff)
add clamav filtering, with sanesecurity signature updating and provider whitelisting (#3625)
Change-Id: I15985ca00ee95bc62855f098a78e364ebbc32616
Diffstat (limited to 'puppet')
-rw-r--r--puppet/modules/clamav/files/01-leap.conf58
-rw-r--r--puppet/modules/clamav/files/clamav-daemon_default8
-rw-r--r--puppet/modules/clamav/files/clamav-milter_default14
-rw-r--r--puppet/modules/clamav/manifests/daemon.pp86
-rw-r--r--puppet/modules/clamav/manifests/freshclam.pp21
-rw-r--r--puppet/modules/clamav/manifests/init.pp8
-rw-r--r--puppet/modules/clamav/manifests/milter.pp48
-rw-r--r--puppet/modules/clamav/manifests/unofficial_sigs.pp22
-rw-r--r--puppet/modules/clamav/templates/clamav-milter.conf.erb28
-rw-r--r--puppet/modules/clamav/templates/local.pdb.erb1
-rw-r--r--puppet/modules/clamav/templates/whitelisted_addresses.erb5
-rw-r--r--puppet/modules/site_postfix/manifests/mx.pp5
12 files changed, 304 insertions, 0 deletions
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