Security advisory

{
  "id": "b3ffddf53d6891684ab39558b273735ba2e8241563b6d091e628f4b5b60d4242",
  "url": "https://osv.dev/vulnerability/CVE-2017-7448",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2017-7448",
    "summary": "The allocate_channel_framebuffer function in uncompressed_components.hh in Dropbox Lepton 1.2.1 allows remote attackers to cause a denial of service (divide-by-zero error and application crash) via a malformed JPEG image.",
    "evidence": "osv:CVE-2017-7448",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2017-7448",
      "aliases": [
        "CVE-2017-7448"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/dropbox/lepton",
              "type": "GIT",
              "events": [
                {
                  "introduced": "c378cbfa2daaa99e8828be7395013f94cedb1bcc"
                },
                {
                  "last_affected": "c378cbfa2daaa99e8828be7395013f94cedb1bcc"
                },
                {
                  "fixed": "7789d99ac156adfd7bbf66e7824bd3e948a74cf7"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:dropbox:lepton:1.2.1:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.2.1"
                      },
                      {
                        "last_affected": "1.2.1"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "range": [
                      {
                        "fixed": "7789d99ac156adfd7bbf66e7824bd3e948a74cf7"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.2.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-7448.json",
            "vanir_signatures": [
              {
                "id": "CVE-2017-7448-910aacf3",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
                    "104845311606380076568842677017325723916",
                    "199487273269160114457741564468247131006",
                    "157679577332504595206723670414743180066",
                    "338000704461876320734988242919132086596",
                    "40073391338326186465395942658324346847"
                  ]
                },
                "source": "https://github.com/dropbox/lepton/commit/7789d99ac156adfd7bbf66e7824bd3e948a74cf7",
                "target": {
                  "file": "src/vp8/model/model.hh"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2017-7448-9c5f61c0",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
                    "300180288418872669232553092164351926291",
                    "301080161881238933121730163318626242666",
                    "141557665056054093696014674072908756801",
                    "290644006959424437078299616216229851174",
                    "29167694385379973089611876023557667337",
                    "7971325174013206209265610457947140027"
                  ]
                },
                "source": "https://github.com/dropbox/lepton/commit/7789d99ac156adfd7bbf66e7824bd3e948a74cf7",
                "target": {
                  "file": "src/lepton/uncompressed_components.hh"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              }
            ],
            "vanir_signatures_modified": "2026-10-20T13:25:27Z"
          }
        }
      ],
      "modified": "2026-10-20T13:25:27.713292064Z",
      "provider": "osv",
      "references": [
        "https://github.com/dropbox/lepton/commit/7789d99ac156adfd7bbf66e7824bd3e948a74cf7",
        "https://github.com/dropbox/lepton/issues/86"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2017-7448",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 387667,
  "published_at": "2017-04-05T23:59:00.157+00:00"
}