lxqt-sudo 0.12.0-2 (amd64 binary) in ubuntu bionic

 lxqt-sudo is a graphical QT frontend for plain sudo(8) (for requesting
 optional password in GUI fashion). When invoked it simply spawns child sudo
 process with requested command (and arguments). If sudo requests user's
 password, the GUI password dialog is shown and (after submit) the password is
 provided to sudo.