CVE-2019-3820

Se ha descubierto que la pantalla de bloqueo de gnome-shell, desde la versión 3.15.91 no restringió correctamente todas las acciones contextuales. Un atacante con acceso físico a una estación de trabajo bloqueada podría invocar ciertos atajos de teclado y, potencialmente, otras acciones.

A vulnerability was found where the gnome-shell lock screen, since version 3.15.91, does not properly restrict all contextual actions. An attacker with physical access to a locked workstation could invoke certain keyboard shortcuts and potentially other actions. This vulnerability was fixed in gnome-shell 3.31.5 and 3.30.3.

It was discovered that GNOME Shell mishandled extensions that fail to reload, possibly leading to extensions staying enabled on the lock screen. An attacker could possibly use this issue to launch applications, view sensitive information, or execute arbitrary commands. It was discovered that the GNOME Shell incorrectly handled certain keyboard inputs. An attacker could possibly use this issue to invoke keyboard shortcuts, and potentially other actions while the workstation was locked.