CVE-2020-17489

MEDIUM

GNOME gnome-shell <3.36.4 - Info Disclosure

Title source: llm

Description

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.)

References (5)

[Third Party Advisory] http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00028.html

[Exploit, Patch, Vendor Advisory] https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/2997

[Third Party Advisory] https://lists.debian.org/debian-lts-announce/2020/09/msg00014.html

[Third Party Advisory] https://security.gentoo.org/glsa/202009-08

[Third Party Advisory] https://usn.ubuntu.com/4464-1/

Scores

CVSS v3 4.3

EPSS 0.0015

EPSS Percentile 35.2%

Attack Vector PHYSICAL

CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Classification

CWE

CWE-522

Status published

Affected Products (4)

gnome/gnome-shell < 3.36.4

canonical/ubuntu_linux

debian/debian_linux

opensuse/leap

Timeline

Published Aug 11, 2020

Tracked Since Feb 18, 2026