Security advisory

{
  "id": "71c9678cd19c3e8b9aef605ccfdbbe255e978f9caf396841f518cdc05e73489d",
  "url": "https://osv.dev/vulnerability/CVE-2017-14062",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2017-14062",
    "summary": "Integer overflow in the decode_digit function in puny_decode.c in Libidn2 before 2.0.4 allows remote attackers to cause a denial of service or possibly have unspecified other impact.",
    "evidence": "osv:CVE-2017-14062",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2017-14062",
      "aliases": [
        "CVE-2017-14062"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://gitlab.com/libidn/libidn2",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3c59e74d054ec407b09c2df81877fcfd7411c187"
                },
                {
                  "fixed": "3284eb342cd0ed1a18786e3fcdf0cdd7e76676bd"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:gnu:libidn2:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "2.0.4"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "3284eb342cd0ed1a18786e3fcdf0cdd7e76676bd"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "libidn2-2.0.3",
            "libidn2-2.0.2",
            "libidn2-2.0.1",
            "libidn2-2.0.0",
            "libidn2-0.16",
            "libidn2-0.15",
            "libidn2-0.14",
            "libidn2-0.13",
            "libidn2-0.12",
            "libidn2-0.11",
            "libidn2-0.10",
            "libidn2-0.9",
            "libidn2-0.8",
            "libidn2-0.7",
            "libidn2-0.6",
            "libidn2-0.5",
            "libidn2-0.4",
            "libidn2-0.3"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-14062.json",
            "vanir_signatures": [
              {
                "id": "CVE-2017-14062-194d3fc3",
                "digest": {
                  "length": 148,
                  "function_hash": "313882673285016518128630165626723743907"
                },
                "source": "https://gitlab.com/libidn/libidn2@3284eb342cd0ed1a18786e3fcdf0cdd7e76676bd",
                "target": {
                  "file": "lib/puny_decode.c",
                  "function": "decode_digit"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2017-14062-1d28844e",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
                    "43904967590308749126868750972375720094",
                    "18784458650069066797871328945181615331",
                    "172304325264056262429336589102177325122",
                    "155990908113113352355167740056706910841",
                    "264332720225271700911696988311842247249",
                    "185260318738334673316606558567720620866",
                    "8726986100073362512337504510611391869"
                  ]
                },
                "source": "https://gitlab.com/libidn/libidn2@3284eb342cd0ed1a18786e3fcdf0cdd7e76676bd",
                "target": {
                  "file": "lib/puny_decode.c"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              }
            ],
            "vanir_signatures_modified": "2026-10-20T13:21:12Z"
          }
        }
      ],
      "modified": "2026-10-20T13:21:12.138495570Z",
      "provider": "osv",
      "references": [
        "https://gitlab.com/libidn/libidn2/blob/master/NEWS",
        "https://lists.debian.org/debian-lts-announce/2018/07/msg00040.html",
        "https://gitlab.com/libidn/libidn2/commit/3284eb342cd0ed1a18786e3fcdf0cdd7e76676bd"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
              "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
              "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
            ],
            "vendor_product": "debian:debian_linux",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "8.0"
                  },
                  {
                    "last_affected": "8.0"
                  },
                  {
                    "introduced": "9.0"
                  },
                  {
                    "last_affected": "9.0"
                  },
                  {
                    "introduced": "10.0"
                  },
                  {
                    "last_affected": "10.0"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2017-14062",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 387541,
  "published_at": "2017-08-31T16:29:00.27+00:00"
}