ImageMagick policy.xml for blocking various exploits

policy.xml

<!-- This is my imagemagick policy.xml file. It's a collection of various
     recommendations cargo culted from around the internet to block various
     exploits. It is effective in stopping CVE-2021-3781 (https://twitter.com/ducnt_/status/1434534373416574983
     and https://github.com/duc-nt/RCE-0-day-for-GhostScript-9.50) -->
<policymap>
  <policy domain="cache" name="shared-secret" value="passphrase" stealth="true"/>
  <policy domain="coder" rights="none" pattern="EPHEMERAL" />
  <policy domain="coder" rights="none" pattern="EPI" />
  <policy domain="coder" rights="none" pattern="EPS" />
  <policy domain="coder" rights="none" pattern="MSL" />
  <policy domain="coder" rights="none" pattern="MVG" />
  <policy domain="coder" rights="none" pattern="PDF" />
  <policy domain="coder" rights="none" pattern="PLT" />
  <policy domain="coder" rights="none" pattern="PS" />
  <policy domain="coder" rights="none" pattern="PS2" />
  <policy domain="coder" rights="none" pattern="PS3" />
  <policy domain="coder" rights="none" pattern="SHOW" />
  <policy domain="coder" rights="none" pattern="TEXT" />
  <policy domain="coder" rights="none" pattern="WIN" />
  <policy domain="coder" rights="none" pattern="XPS" />
  <policy domain="delegate" rights="none" pattern="HTTP" />
  <policy domain="delegate" rights="none" pattern="HTTPS" />
  <policy domain="delegate" rights="none" pattern="URL" />
  <policy domain="path" rights="none" pattern="@*"/>
  <policy domain="resource" name="area" value="128MB"/>
  <policy domain="resource" name="disk" value="1GiB"/>
  <policy domain="resource" name="height" value="16KP"/>
  <policy domain="resource" name="map" value="512MiB"/>
  <policy domain="resource" name="memory" value="256MiB"/>
  <policy domain="resource" name="width" value="16KP"/>
</policymap>