Security updates for Friday

Security updates have been issued by Debian (pdns), Fedora (firefox, freerdp, ghostscript, gnome-boxes, gnutls, libarchive, libssh2, pidgin-sipe, poppler, and remmina), openSUSE (gd, ImageMagick, ldb, libcaca, ntp, openssl-1_1, ovmf, thunderbird, w3m, and wavpack), SUSE (apache2, firefox, and libvirt), and Ubuntu (advancecomp and apache2).