CVE-2020-17489 (GCVE-0-2020-17489)

Vulnerability from cvelistv5 – Published: 2020-08-11 20:07 – Updated: 2024-08-04 14:00
VLAI
Summary
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.)
Severity
4.3 (Medium)
CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CWE
  • n/a
Assigner
References
URL Tags
https://gitlab.gnome.org/GNOME/gnome-shell/-/issu… x_refsource_MISC
https://usn.ubuntu.com/4464-1/ vendor-advisoryx_refsource_UBUNTU
https://security.gentoo.org/glsa/202009-08 vendor-advisoryx_refsource_GENTOO
https://lists.debian.org/debian-lts-announce/2020… mailing-listx_refsource_MLIST
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
Show details on NVD website
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    "redhat_vex": {
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      "current_release_date": "2025-11-21T15:54:32+00:00",
      "cve": "CVE-2020-17489",
      "id": "CVE-2020-17489",
      "initial_release_date": "2020-08-11T00:00:00+00:00",
      "product_status:fixed": "13",
      "product_status:known_not_affected": "3",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "gnome-shell: Password from logged-out user may be shown on login screen",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-17489.json",
      "version": "3"
    },
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      "aggregate_severity": "low",
      "current_release_date": "2026-07-17T14:03:59Z",
      "cve": "CVE-2020-17489",
      "id": "CVE-2020-17489",
      "initial_release_date": "2023-02-15T03:55:33Z",
      "product_status:known_not_affected": "101",
      "product_status:recommended": "239",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2020-17489",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2020-17489.json",
      "version": "16"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.