Security updates for Friday
Security updates have been issued by Debian (dbus, isc-dhcp, and strongswan), Fedora (booth, php, php-twig, php-twig2, and php-twig3), Oracle (expat, prometheus-jmx-exporter, and squid), Red Hat (expat, openvswitch2.11, and squid), Scientific Linux (expat and squid), SUSE (exiv2, LibVNCServer, postgresql-jdbc, protobuf, python-PyJWT, python3, slurm, squid, and webkit2gtk3), and Ubuntu (libreoffice).