gnome-shell vulnerability

A security issue affects these releases of Ubuntu and its
derivatives:

* Ubuntu 20.04 LTS

Summary

The system could be made to expose sensitive information.

Software Description

* gnome-shell - graphical shell for the GNOME desktop

Details

It was discovered that GNOME Shell incorrectly handled the login
screen password dialog. Sensitive information could possibly be
exposed during user logout.

Update instructions

The problem can be corrected by updating your system to the
following package versions:

Ubuntu 20.04 LTS
gnome-shell - 3.36.4-1ubuntu1~20.04.2

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

After a standard system update you need to reboot your computer to
make all the necessary changes.

References

* CVE-2020-17489

--- Mystic BBS v1.12 A46 (Linux/64)
* Origin: BZ&BZ BBS (21:4/110)