Security advisory

{
  "id": "323ef88a3dca71b46b808c38266bc05542b365db528c13e3b977f19cb552e8f7",
  "url": "https://osv.dev/vulnerability/CVE-2019-10190",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2019-10190",
    "summary": "A vulnerability was discovered in DNS resolver component of knot resolver through version 3.2.0 before 4.1.0 which allows remote attackers to bypass DNSSEC validation for non-existence answer. NXDOMAIN answer would get passed through to the client even if its DNSSEC validation failed, instead of sending a SERVFAIL packet. Caching is not affected by this particular bug but see CVE-2019-10191.",
    "evidence": "osv:CVE-2019-10190",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2019-10190",
      "aliases": [
        "CVE-2019-10190"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/cz-nic/knot-resolver",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "839e7c4173d18800fd827eed7fad9afbb08a8135"
                },
                {
                  "introduced": "40cdcc0f7d5cb9a767111ae5e5ecd08b26ea8bc4"
                },
                {
                  "fixed": "0d2f2faff25dc01dcb676cd3c4242047af705e7a"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:nic:knot_resolver:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "3.2.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:nic:knot_resolver:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.0.0"
                      },
                      {
                        "fixed": "4.1.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v4.0.0",
            "v3.2.0",
            "v3.1.0",
            "v3.0.0",
            "v2.4.0",
            "v2.3.0",
            "v2.2.0",
            "v2.1.1",
            "v2.1.0",
            "v2.0.0",
            "v1.5.1",
            "v1.5.0",
            "v1.4.0",
            "v1.3.3",
            "v1.3.2",
            "v1.3.1",
            "v1.3.0",
            "v1.2.6",
            "v1.2.1",
            "v1.2.0",
            "v1.2.0-rc3",
            "v1.2.0-rc2",
            "v1.2.0-rc1",
            "v1.1.1",
            "v1.1.0",
            "v1.0.0",
            "v1.0.0-beta3",
            "v1.0.0-beta2",
            "v1.0.0-beta1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-10190.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:53.090529037Z",
      "provider": "osv",
      "references": [
        "https://lists.debian.org/debian-lts-announce/2024/04/msg00017.html",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TMSSWBHINIX4WE6UDXWM66L7JYEK6XS6/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VZV5YZZ5766UIG2TFLFJL6EESQNAP5X5/",
        "https://www.knot-resolver.cz/2019-07-10-knot-resolver-4.1.0.html",
        "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10190"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*",
              "cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*"
            ],
            "vendor_product": "fedoraproject:fedora",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "29"
                  },
                  {
                    "last_affected": "29"
                  },
                  {
                    "introduced": "30"
                  },
                  {
                    "last_affected": "30"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2019-10190",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 437839,
  "published_at": "2019-07-16T18:15:12.087+00:00"
}