It was discovered that any unprivileged user could monitor and send method calls to the ibus bus of another user, due to a misconfiguration during the setup of the DBus server. When ibus is in use, a local attacker, who discovers the UNIX socket used by another user connected on a graphical environment, could use this flaw to intercept all keystrokes of the victim user or modify input related configurations through DBus method calls (CVE-2019-14822).