Security advisory

{
  "id": "0935427bf131ee37dd0f2b95b94e81deaee6384755ecd060a76fabed5578a101",
  "url": "https://osv.dev/vulnerability/CVE-2020-12244",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-12244",
    "summary": "An issue has been found in PowerDNS Recursor 4.1.0 through 4.3.0 where records in the answer section of a NXDOMAIN response lacking an SOA were not properly validated in SyncRes::processAnswer, allowing an attacker to bypass DNSSEC validation.",
    "evidence": "osv:CVE-2020-12244",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2020-12244",
      "aliases": [
        "CVE-2020-12244"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/powerdns/pdns",
              "type": "GIT",
              "events": [
                {
                  "introduced": "80da1b4773cbdad76755b01c70739059d6f607af"
                },
                {
                  "last_affected": "f8e019026f5a1eff4b56a90a39c4acac95ae9dc4"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.1.0"
                      },
                      {
                        "last_affected": "4.3.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "rec-4.3.0",
            "rec-4.3.0-rc2",
            "rec-4.3.0-rc1",
            "rec-4.3.0-beta2",
            "rec-4.3.0-beta1",
            "auth-4.3.0-alpha1",
            "dnsdist-1.4.0",
            "dnsdist-1.4.0-rc5",
            "rec-4.3.0-alpha3",
            "rec-4.3.0-alpha2",
            "dnsdist-1.4.0-rc4",
            "dnsdist-1.4.0-rc3",
            "rec-4.3.0-alpha1",
            "dnsdist-1.4.0-rc2",
            "dnsdist-1.4.0-rc1",
            "auth-4.2.0-rc2",
            "dnsdist-1.4.0-beta1",
            "rec-4.2.0-rc1",
            "rec-4.2.0-beta1",
            "dnsdist-1.4.0-alpha2",
            "dnsdist-1.4.0-alpha1",
            "auth-4.2.0-rc1",
            "dnsdist-1.3.3",
            "auth-4.2.0-beta1",
            "rec-4.2.0-alpha1",
            "auth-4.2.0-alpha1",
            "dnsdist-1.3.2",
            "dnsdist-1.3.1",
            "dnsdist-1.3.0",
            "rec-4.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-12244.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:51.729696653Z",
      "provider": "osv",
      "references": [
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NMP72NJGKBWR5WEBXAWX5KSLQUDFTG6S/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PS4ZN5XGENYNFKX7QIIOUCQQHXE37GJF/",
        "https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-02.html",
        "https://www.debian.org/security/2020/dsa-4691"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*"
            ],
            "vendor_product": "debian:debian_linux",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "10.0"
                  },
                  {
                    "last_affected": "10.0"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*",
              "cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*"
            ],
            "vendor_product": "fedoraproject:fedora",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "31"
                  },
                  {
                    "last_affected": "31"
                  },
                  {
                    "introduced": "32"
                  },
                  {
                    "last_affected": "32"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:a:opensuse:backports_sle:15.0:sp1:*:*:*:*:*:*"
            ],
            "vendor_product": "opensuse:backports_sle",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "15.0-sp1"
                  },
                  {
                    "last_affected": "15.0-sp1"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*"
            ],
            "vendor_product": "opensuse:leap",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "15.1"
                  },
                  {
                    "last_affected": "15.1"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2020-12244",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 437548,
  "published_at": "2020-05-19T14:15:11.097+00:00"
}