/usr/share/icingaweb2/modules/monitoring/library/Monitoring/Web/ is in icingaweb2-module-monitoring 2.1.0-1ubuntu1.
This file is owned by root:root, with mode 0o755.
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/usr/share/icingaweb2/modules/monitoring/library/Monitoring/Web/Controller/
/usr/share/icingaweb2/modules/monitoring/library/Monitoring/Web/Controller/MonitoredObjectController.php
/usr/share/icingaweb2/modules/monitoring/library/Monitoring/Web/Hook/
/usr/share/icingaweb2/modules/monitoring/library/Monitoring/Web/Hook/HostActionsHook.php
/usr/share/icingaweb2/modules/monitoring/library/Monitoring/Web/Hook/ServiceActionsHook.php
/usr/share/icingaweb2/modules/monitoring/library/Monitoring/Web/Hook/TimelineProviderHook.php
/usr/share/icingaweb2/modules/monitoring/library/Monitoring/Web/Navigation/
/usr/share/icingaweb2/modules/monitoring/library/Monitoring/Web/Navigation/Action.php
/usr/share/icingaweb2/modules/monitoring/library/Monitoring/Web/Navigation/HostAction.php
/usr/share/icingaweb2/modules/monitoring/library/Monitoring/Web/Navigation/HostNote.php
/usr/share/icingaweb2/modules/monitoring/library/Monitoring/Web/Navigation/Renderer/
/usr/share/icingaweb2/modules/monitoring/library/Monitoring/Web/Navigation/Renderer/BackendAvailabilityNavigationItemRenderer.php
/usr/share/icingaweb2/modules/monitoring/library/Monitoring/Web/Navigation/Renderer/MonitoringBadgeNavigationItemRenderer.php
/usr/share/icingaweb2/modules/monitoring/library/Monitoring/Web/Navigation/ServiceAction.php
/usr/share/icingaweb2/modules/monitoring/library/Monitoring/Web/Navigation/ServiceNote.php
/usr/share/icingaweb2/modules/monitoring/library/Monitoring/Web/Widget/
/usr/share/icingaweb2/modules/monitoring/library/Monitoring/Web/Widget/SelectBox.php
/usr/share/icingaweb2/modules/monitoring/library/Monitoring/Web/Widget/StateBadges.php