Simple Desktop Display Manager (SDDM) before 0.10.0 allows local users to log in as user "sddm" without authentication.
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "0.13.0-1ubuntu5", "binary_name": "sddm" }, { "binary_version": "0.13.0-1ubuntu5", "binary_name": "sddm-dbg" }, { "binary_version": "0.13.0-1ubuntu5", "binary_name": "sddm-dbgsym" }, { "binary_version": "0.13.0-1ubuntu5", "binary_name": "sddm-theme-circles" }, { "binary_version": "0.13.0-1ubuntu5", "binary_name": "sddm-theme-elarun" }, { "binary_version": "0.13.0-1ubuntu5", "binary_name": "sddm-theme-maldives" }, { "binary_version": "0.13.0-1ubuntu5", "binary_name": "sddm-theme-maui" } ] }