Security updates for Monday

Security updates have been issued by Debian (curl, libdbi-perl, linux-4.19, lua5.3, mediawiki, nfdump, openssl1.0, qt4-x11, qtbase-opensource-src, ruby-gon, and yaws), Fedora (grub2, libxml2, perl-DBI, singularity, and xawtv), Mageia (cifs-utils, kio-extras, libproxy, mbedtls, nodejs, novnc, and pdns), openSUSE (bcm43xx-firmware, chromium, conmon, fuse-overlayfs, libcontainers-common, podman, firefox, libqt4, libqt5-qtbase, openldap2, ovmf, pdns, rubygem-actionpack-5_1, and tiff), SUSE (firefox, go1.14, ImageMagick, and libqt5-qtbase), and Ubuntu (firefox, gnuplot, libquicktime, miniupnpd, ruby-sanitize, and sudo).