Bug#968311: gnome-shell: CVE-2020-17489

[Salvatore Bonaccorso]

Source: gnome-shell
Version: 3.36.4-1
Severity: important
Tags: security upstream
Forwarded: https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/2997
X-Debbugs-Cc: carnil at debian.org, Debian Security Team <team at security.debian.org>

Hi,

The following vulnerability was published for gnome-shell.

CVE-2020-17489[0]:
| An issue was discovered in certain configurations of GNOME gnome-shell
| through 3.36.4. When logging out of an account, the password box from
| the login dialog reappears with the password still visible. If the
| user had decided to have the password shown in cleartext at login
| time, it is then visible for a brief moment upon a logout. (If the
| password were never shown in cleartext, only the password length is
| revealed.)


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2020-17489
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-17489
[1] https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/2997
[2] https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1377
[3] https://gitlab.gnome.org/GNOME/gnome-shell/-/commit/13137aad9db52223e8b62cecbd3456f4a7f66f04

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore