CVE-2020-17489 Information disclosure in n/a
An attacker with physical access can view a user's cleartext password briefly during logout if the user previously chose to display it.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2020-17489?
CVE-2020-17489 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 11 Aug 2020. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official 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.)
Weakness: CWE-522
Which versions are affected by CVE-2020-17489?
It affects 4 products.
Linux distribution packages (10)
gnome-shell AlmaLinux:8 | All versions | 3.32.2-44.el8 |
gnome-shell Red Hat:enterprise_linux:8::appstream | All versions | 0:3.32.2-44.el8 |
gnome-shell-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:3.32.2-44.el8 |
gnome-shell-debugsource Red Hat:enterprise_linux:8::appstream | All versions | 0:3.32.2-44.el8 |
gnome-shell Rocky Linux:8 | All versions | 0:3.32.2-44.el8 |
gnome-settings-daemon SUSE:Linux Enterprise Module for Desktop Applications 15 SP2 | All versions | 3.34.2+0-4.3.1 |
gnome-shell SUSE:Linux Enterprise Module for Desktop Applications 15 SP2 | All versions | 3.34.5-3.13.1 |
gnome-shell SUSE:Linux Enterprise Workstation Extension 15 SP2 | All versions | 3.34.5-3.13.1 |
gnome-settings-daemon openSUSE:Leap 15.2 | All versions | 3.34.2+0-lp152.3.3.1 |
gnome-shell openSUSE:Leap 15.2 | All versions | 3.34.5-lp152.2.9.1 |
Products include Canonical Ubuntu Linux, Debian Debian Linux, Gnome Gnome-Shell, Opensuse Leap.
How do I fix CVE-2020-17489?
Apply the vendor's patch.
Is CVE-2020-17489 being exploited?
There is no known exploitation of CVE-2020-17489 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as ALSA-2022:1814, DEBIAN-CVE-2020-17489, DLA-2374-1, GHSA-vfpj-rcwj-86vm, MGASA-2021-0316, OESA-2021-1152 and 6 more.