Security advisory

{
  "id": "96f65d2db6a8b398de03d900fbb26c6da612fcc72e5e07c2074be7d05b579c78",
  "url": "https://osv.dev/vulnerability/CVE-2018-14345",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2018-14345",
    "summary": "An issue was discovered in SDDM through 0.17.0. If configured with ReuseSession=true, the password is not checked for users with an already existing session. Any user with access to the system D-Bus can therefore unlock any graphical session. This is related to daemon/Display.cpp and helper/backend/PamBackend.cpp.",
    "evidence": "osv:CVE-2018-14345",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2018-14345",
      "aliases": [
        "CVE-2018-14345"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/sddm/sddm",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "a15888b04dee1c3194b1b81b7660b6e0f5ebdb43"
                },
                {
                  "fixed": "147cec383892d143b5e02daa70f1e7def50f5d98"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:sddm_project:sddm:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "0.17.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "147cec383892d143b5e02daa70f1e7def50f5d98"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.17.0",
            "v0.14.0",
            "v0.13.0",
            "v0.12.0",
            "v0.11.0",
            "v0.9.0",
            "v0.8.99",
            "v0.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-14345.json",
            "vanir_signatures": [
              {
                "id": "CVE-2018-14345-0706d99e",
                "digest": {
                  "length": 2885,
                  "function_hash": "319224329539215714289671669912780491363"
                },
                "source": "https://github.com/sddm/sddm/commit/147cec383892d143b5e02daa70f1e7def50f5d98",
                "target": {
                  "file": "src/daemon/Display.cpp",
                  "function": "Display::startAuth"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2018-14345-4ae14c8b",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
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                    "24502458836258739375168040153194422888",
                    "55942035781579219665812584806630447444"
                  ]
                },
                "source": "https://github.com/sddm/sddm/commit/147cec383892d143b5e02daa70f1e7def50f5d98",
                "target": {
                  "file": "src/helper/backend/PamBackend.cpp"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2018-14345-e1903dd6",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
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                    "306465001103480198932012981717466945874",
                    "219292707561094369074006847099265323343"
                  ]
                },
                "source": "https://github.com/sddm/sddm/commit/147cec383892d143b5e02daa70f1e7def50f5d98",
                "target": {
                  "file": "src/daemon/Display.cpp"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2018-14345-f063ae82",
                "digest": {
                  "length": 475,
                  "function_hash": "100533615849233512736798439883991909764"
                },
                "source": "https://github.com/sddm/sddm/commit/147cec383892d143b5e02daa70f1e7def50f5d98",
                "target": {
                  "file": "src/helper/backend/PamBackend.cpp",
                  "function": "PamBackend::start"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              }
            ],
            "vanir_signatures_modified": "2026-10-20T13:36:43Z"
          }
        }
      ],
      "modified": "2026-10-20T13:36:43.660228086Z",
      "provider": "osv",
      "references": [
        "https://bugzilla.suse.com/show_bug.cgi?id=1101450",
        "https://github.com/sddm/sddm/commit/147cec383892d143b5e02daa70f1e7def50f5d98"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2018-14345",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 387889,
  "published_at": "2018-07-17T14:29:00.517+00:00"
}