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gnome-shell — security advisory

Type: advisorySources: OSVAdvisory ID: DEBIAN-CVE-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 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.)

Products
gnome-shell
Affected versions
Not specified
Fixed versions
3.36.5-1
CVEs
CVE-2020-17489
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 13:05 UTC · Revision 1

Source evidence

DEBIAN-CVE-2020-17489

core-osv · Original source

Published 11 Aug 2020, 21:15 UTC

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:DEBIAN-CVE-2020-17489

gnome-shell

Fixed versions: 3.36.5-1

gnome-shell

Fixed versions: 3.36.5-1

gnome-shell

Fixed versions: 3.36.5-1

Complete source record
{
  "id": "4b8071aebc7faaa2c8d0df35433d3f89e36d680b1a53dff6513b33918bb0afa3",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2020-17489",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2020-17489",
    "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.)",
    "evidence": "osv:DEBIAN-CVE-2020-17489",
    "products": [
      {
        "name": {
          "value": "gnome-shell",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.36.5-1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "gnome-shell",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.36.5-1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "gnome-shell",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.36.5-1",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "DEBIAN-CVE-2020-17489",
      "aliases": [
        "DEBIAN-CVE-2020-17489"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.36.5-1"
                }
              ]
            }
          ],
          "package": {
            "name": "gnome-shell",
            "purl": "pkg:deb/debian/gnome-shell?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-17489.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.36.5-1"
                }
              ]
            }
          ],
          "package": {
            "name": "gnome-shell",
            "purl": "pkg:deb/debian/gnome-shell?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-17489.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.36.5-1"
                }
              ]
            }
          ],
          "package": {
            "name": "gnome-shell",
            "purl": "pkg:deb/debian/gnome-shell?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-17489.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-26T12:01:42.466137252Z",
      "provider": "osv",
      "upstream": [
        "CVE-2020-17489"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2020-17489"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2020-17489",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 451794,
  "published_at": "2020-08-11T21:15:10.837+00:00"
}