CVE-2020-17489
published 2020-08-11CVE-2020-17489: 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…
PriorityP418medium4.3CVSS 3.1
AVPACLPRNUIRSUCHINAN
EPSS
0.55%
42.9th percentile
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.)
Affected
9 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| canonical | ubuntu_linux | — | — |
| debian | debian_linux | — | — |
| debian | gnome-shell | < gnome-shell 3.36.5-1 (bookworm) | gnome-shell 3.36.5-1 (bookworm) |
| gnome | gnome-shell | <= 3.36.4 | — |
| gnome | gnome-shell | >= 0 < 3.36.5-1 | 3.36.5-1 |
| gnome | gnome-shell | >= 0 < 3.36.5-1 | 3.36.5-1 |
| gnome | gnome-shell | >= 0 < 3.36.5-1 | 3.36.5-1 |
| gnome | gnome-shell | >= 0 < 3.36.5-1 | 3.36.5-1 |
| opensuse | leap | — | — |
CVSS provenance
nvdv3.14.3MEDIUMCVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
nvdv2.01.9LOWAV:L/AC:M/Au:N/C:P/I:N/A:N
osv4.3MEDIUM
vendor_debian4.3MEDIUM
vendor_redhat4.3MEDIUM
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Ubuntu
GNOME Shell vulnerability
vendor_ubuntu·2020-08-18
CVE-2020-17489 GNOME Shell vulnerability
Title: GNOME Shell vulnerability
Summary: The system could be made to expose sensitive information.
It was discovered that GNOME Shell incorrectly handled the login screen
password dialog. Sensitive information could possibly be exposed during
user logout.
Instructions: After a standard system update you need to reboot your computer to make all
the necessary changes.
Red Hat
gnome-shell: Password from logged-out user may be shown on login screen
vendor_redhat·2020-08-11·CVSS 4.3
CVE-2020-17489 [MEDIUM] CWE-200 gnome-shell: Password from logged-out user may be shown on login screen
gnome-shell: Password from logged-out user may be shown on login screen
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.)
Statement: This flaw does not affect gnome-shell as shipped with Red Hat Enterprise Linux 6 or 7. For 6, there is no option to view the password in the clear at login, and for 7, the login screen is killed upon login.
Mitigation: Do not use the "view password" context menu option when logging into gnome-
Debian
CVE-2020-17489: gnome-shell - An issue was discovered in certain configurations of GNOME gnome-shell through 3...
vendor_debian·2020·CVSS 4.3
CVE-2020-17489 [MEDIUM] CVE-2020-17489: gnome-shell - An issue was discovered in certain configurations of GNOME gnome-shell through 3...
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.)
Scope: local
bookworm: resolved (fixed in 3.36.5-1)
bullseye: resolved (fixed in 3.36.5-1)
forky: resolved (fixed in 3.36.5-1)
sid: resolved (fixed in 3.36.5-1)
trixie: resolved (fixed in 3.36.5-1)
GHSA
GHSA-vfpj-rcwj-86vm: An issue was discovered in certain configurations of GNOME gnome-shell through 3
ghsa_unreviewed·2022-05-24
CVE-2020-17489 [LOW] CWE-522 GHSA-vfpj-rcwj-86vm: An issue was discovered in certain configurations of GNOME gnome-shell through 3
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.)
OSV
CVE-2020-17489: An issue was discovered in certain configurations of GNOME gnome-shell through 3
osv·2020-08-11·CVSS 4.3
CVE-2020-17489 [MEDIUM] CVE-2020-17489: An issue was discovered in certain configurations of GNOME gnome-shell through 3
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.)
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2020-17489 gnome-shell: Password from logged-out user may be shown on login screen
bugzilla·2020-08-12·CVSS 4.3
CVE-2020-17489 [MEDIUM] CVE-2020-17489 gnome-shell: Password from logged-out user may be shown on login screen
CVE-2020-17489 gnome-shell: Password from logged-out user may be shown on login screen
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:
https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/2997
Discussion:
Created gnome-shell tracking bugs for this issue:
Affects: fedora-all [bug 1868419]
---
Mitigation:
Do not use the "view password" context menu option when logging into gnome-shell.
---
Statement:
Thi
Bugzilla
CVE-2020-17489 gnome-shell: Password from logged-out user may be shown on login screen [fedora-all]
bugzilla·2020-08-12·CVSS 4.3
CVE-2020-17489 [MEDIUM] CVE-2020-17489 gnome-shell: Password from logged-out user may be shown on login screen [fedora-all]
CVE-2020-17489 gnome-shell: Password from logged-out user may be shown on login screen [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multi
http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00028.htmlhttps://gitlab.gnome.org/GNOME/gnome-shell/-/issues/2997https://lists.debian.org/debian-lts-announce/2020/09/msg00014.htmlhttps://security.gentoo.org/glsa/202009-08https://usn.ubuntu.com/4464-1/http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00028.htmlhttps://gitlab.gnome.org/GNOME/gnome-shell/-/issues/2997https://lists.debian.org/debian-lts-announce/2020/09/msg00014.htmlhttps://security.gentoo.org/glsa/202009-08https://usn.ubuntu.com/4464-1/
2020-08-11
Published