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gnome-shell — security advisory

Type: advisorySources: OSVAdvisory ID: DEBIAN-CVE-2023-43090

A vulnerability was found in GNOME Shell. GNOME Shell's lock screen allows an unauthenticated local user to view windows of the locked desktop session by using keyboard shortcuts to unlock the restricted functionality of the screenshot tool.

Products
gnome-shell
Affected versions
43.4-1, 43.6-1~deb12u1
Fixed versions
43.6-1~deb12u2, 44.5-1
CVEs
CVE-2023-43090
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 16:26 UTC · Revision 1

Source evidence

DEBIAN-CVE-2023-43090

core-osv · Original source

Published 22 Sept 2023, 06:15 UTC

A vulnerability was found in GNOME Shell. GNOME Shell's lock screen allows an unauthenticated local user to view windows of the locked desktop session by using keyboard shortcuts to unlock the restricted functionality of the screenshot tool.

osv:DEBIAN-CVE-2023-43090

gnome-shell

Fixed versions: 43.6-1~deb12u2

gnome-shell

Fixed versions: 44.5-1

gnome-shell

Fixed versions: 44.5-1

Complete source record
{
  "id": "fc25f4358749dd5071eb29c72c63f1f8ae298c40fe2e5d6ce60205834dcafbda",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2023-43090",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2023-43090",
    "summary": "A vulnerability was found in GNOME Shell. GNOME Shell's lock screen allows an unauthenticated local user to view windows of the locked desktop session by using keyboard shortcuts to unlock the restricted functionality of the screenshot tool.",
    "evidence": "osv:DEBIAN-CVE-2023-43090",
    "products": [
      {
        "name": {
          "value": "gnome-shell",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "43.6-1~deb12u2",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "43.4-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "43.6-1~deb12u1",
            "evidence": "/affected/0/versions"
          }
        ]
      },
      {
        "name": {
          "value": "gnome-shell",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "44.5-1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "gnome-shell",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "44.5-1",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "DEBIAN-CVE-2023-43090",
      "aliases": [
        "DEBIAN-CVE-2023-43090"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "43.6-1~deb12u2"
                }
              ]
            }
          ],
          "package": {
            "name": "gnome-shell",
            "purl": "pkg:deb/debian/gnome-shell?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "versions": [
            "43.4-1",
            "43.6-1~deb12u1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-43090.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "44.5-1"
                }
              ]
            }
          ],
          "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-2023-43090.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "44.5-1"
                }
              ]
            }
          ],
          "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-2023-43090.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-26T18:03:07.004962795Z",
      "provider": "osv",
      "upstream": [
        "CVE-2023-43090"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2023-43090"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2023-43090",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 457697,
  "published_at": "2023-09-22T06:15:09.81+00:00"
}