[USN-7052-1] GNOME Shell vulnerabilities

[Bruce Cable]

==========================================================================
Ubuntu Security Notice USN-7052-1
October 03, 2024

gnome-shell vulnerabilities
==========================================================================

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

- Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in GNOME Shell.

Software Description:
- gnome-shell: graphical shell for the GNOME desktop

Details:

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. (CVE-2017-8288)

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. (CVE-2019-3820)

Update instructions:

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

Ubuntu 16.04 LTS
   gnome-shell                     3.18.5-0ubuntu0.3+esm1
                                   Available with Ubuntu Pro

After a standard system update you need to restart your session to make all
the necessary changes.

References:
   https://ubuntu.com/security/notices/USN-7052-1
   CVE-2017-8288, CVE-2019-3820


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