CVE-2020-17489

low-risk
Published 2020-08-11

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.)

Do I need to act?

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0.15% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
4
CVSS 4.3/10 Medium
PHYSICAL / LOW complexity

Affected Products (4)

Gnome-Shell

Affected Vendors

Debian Gnome Canonical Opensuse

References (10)

Third Party Advisory http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00028.html
Exploit 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/
Third Party Advisory http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00028.html
Exploit 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/
26
/ 100
low-risk
Severity 15/34 · Moderate
Exploitability 1/34 · Minimal
Exposure 10/34 · Low