ansible-inventories/arocom#110 Change ImageMagick policy.xml to fix a security...

ansible-inventories/arocom#110 Change ImageMagick policy.xml to fix a security issue, see https://www.imagemagick.org/discourse-server/viewtopic.php?f=4&t=29588

tasks/php.yml

@@ -119,3 +119,19 @@
 
 - include: oci.yml
   when: repository is defined and php_needs_oci8 and oci_available.stdout != '/usr/lib/php5/20090626/pdo_oci.so'
+
+- name: "PHP | Ensure ImageMagick config directory"
+  file:
+    dest=/etc/ImageMagick
+    state=directory
+    owner=root
+    group=root
+    mode=0755
+
+- name: "PHP | ImageMagick Policy File"
+  template:
+    src=etc-imagemagick-policy.xml
+    dest=/etc/ImageMagick/policy.xml
+    owner=root
+    group=root
+    mode=0644

templates/etc-imagemagick-policy.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE policymap [
+<!ELEMENT policymap (policy)+>
+<!ELEMENT policy (#PCDATA)>
+<!ATTLIST policy domain (delegate|coder|filter|path|resource) #IMPLIED>
+<!ATTLIST policy name CDATA #IMPLIED>
+<!ATTLIST policy rights CDATA #IMPLIED>
+<!ATTLIST policy pattern CDATA #IMPLIED>
+<!ATTLIST policy value CDATA #IMPLIED>
+]>
+<!--
+  Configure ImageMagick policies.
+
+  Domains include system, delegate, coder, filter, path, or resource.
+
+  Rights include none, read, write, and execute.  Use | to combine them,
+  for example: "read | write" to permit read from, or write to, a path.
+
+  Use a glob expression as a pattern.
+
+  Suppose we do not want users to process MPEG video images:
+
+    <policy domain="delegate" rights="none" pattern="mpeg:decode" />
+
+  Here we do not want users reading images from HTTP:
+
+    <policy domain="coder" rights="none" pattern="HTTP" />
+
+  Lets prevent users from executing any image filters:
+
+    <policy domain="filter" rights="none" pattern="*" />
+
+  The /repository file system is restricted to read only.  We use a glob
+  expression to match all paths that start with /repository:
+
+    <policy domain="path" rights="read" pattern="/repository/*" />
+
+  Any large image is cached to disk rather than memory:
+
+    <policy domain="resource" name="area" value="1GB"/>
+
+  Define arguments for the memory, map, area, and disk resources with
+  SI prefixes (.e.g 100MB).  In addition, resource policies are maximums for
+  each instance of ImageMagick (e.g. policy memory limit 1GB, -limit 2GB
+  exceeds policy maximum so memory limit is 1GB).
+-->
+<policymap>
+  <!-- <policy domain="system" name="precision" value="6"/> -->
+  <!-- <policy domain="resource" name="temporary-path" value="/tmp"/> -->
+  <!-- <policy domain="resource" name="memory" value="2GiB"/> -->
+  <!-- <policy domain="resource" name="map" value="4GiB"/> -->
+  <!-- <policy domain="resource" name="area" value="1GB"/> -->
+  <!-- <policy domain="resource" name="disk" value="16EB"/> -->
+  <!-- <policy domain="resource" name="file" value="768"/> -->
+  <!-- <policy domain="resource" name="thread" value="4"/> -->
+  <!-- <policy domain="resource" name="throttle" value="0"/> -->
+  <!-- <policy domain="resource" name="time" value="3600"/> -->
+  <policy domain="coder" rights="none" pattern="EPHEMERAL" />
+  <policy domain="coder" rights="none" pattern="HTTPS" />
+  <policy domain="coder" rights="none" pattern="MVG" />
+  <policy domain="coder" rights="none" pattern="MSL" />
+  <policy domain="coder" rights="none" pattern="TEXT" />
+  <policy domain="coder" rights="none" pattern="SHOW" />
+  <policy domain="coder" rights="none" pattern="WIN" />
+  <policy domain="coder" rights="none" pattern="PLT" />
+</policymap>