Security advisory

{
  "id": "99ae1cdc4fcefa274fd762c881f23b8f73963cd69b4b5cad7e425addd07281dd",
  "url": "https://osv.dev/vulnerability/CVE-2021-25218",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-25218",
    "summary": "In BIND 9.16.19, 9.17.16. Also, version 9.16.19-S1 of BIND Supported Preview Edition When a vulnerable version of named receives a query under the circumstances described above, the named process will terminate due to a failed assertion check. The vulnerability affects only BIND 9 releases 9.16.19, 9.17.16, and release 9.16.19-S1 of the BIND Supported Preview Edition.",
    "evidence": "osv:CVE-2021-25218",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-25218",
      "aliases": [
        "CVE-2021-25218"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/isc-projects/bind9",
              "type": "GIT",
              "events": [
                {
                  "introduced": "df0e7519ee67fb7448c992d5dc792adab9806d0a"
                },
                {
                  "last_affected": "b33f621318e6dd12672a42b5773e8d3d97cad5d8"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:isc:bind:9.16.19:*:*:*:-:*:*:*",
                    "range": [
                      {
                        "introduced": "9.16.19"
                      },
                      {
                        "last_affected": "9.16.19"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:isc:bind:9.17.16:*:*:*:-:*:*:*",
                    "range": [
                      {
                        "introduced": "9.17.16"
                      },
                      {
                        "last_affected": "9.17.16"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "9.16.19",
            "9.17.16"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-25218.json"
          }
        },
        {
          "ranges": [
            {
              "repo": "https://gitlab.isc.org/isc-projects/bind9",
              "type": "GIT",
              "events": [
                {
                  "introduced": "df0e7519ee67fb7448c992d5dc792adab9806d0a"
                },
                {
                  "last_affected": "b33f621318e6dd12672a42b5773e8d3d97cad5d8"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:isc:bind:9.16.19:*:*:*:-:*:*:*",
                    "range": [
                      {
                        "introduced": "9.16.19"
                      },
                      {
                        "last_affected": "9.16.19"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:isc:bind:9.17.16:*:*:*:-:*:*:*",
                    "range": [
                      {
                        "introduced": "9.17.16"
                      },
                      {
                        "last_affected": "9.17.16"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "9.16.19",
            "9.17.16"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-25218.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:56.524370189Z",
      "provider": "osv",
      "references": [
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZPJCLGSR4BTGFLBLGIE5TEQP2SNJKGVL/",
        "https://security.netapp.com/advisory/ntap-20210909-0002/",
        "https://kb.isc.org/v1/docs/cve-2021-25218"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*"
            ],
            "vendor_product": "fedoraproject:fedora",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "34"
                  },
                  {
                    "last_affected": "34"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:a:isc:bind:9.17.16:s1:*:*:supported_preview:*:*:*"
            ],
            "vendor_product": "isc:bind",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "9.17.16-s1"
                  },
                  {
                    "last_affected": "9.17.16-s1"
                  },
                  {
                    "introduced": "9.17.16-s1"
                  },
                  {
                    "last_affected": "9.17.16-s1"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2021-25218",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 438685,
  "published_at": "2021-08-18T19:15:07.333+00:00"
}