Security advisory

{
  "id": "12c1bd6d6ab8d5e539a4d4f904e310d35b2e87e81a41d45b51d0694f4fc6d289",
  "url": "https://osv.dev/vulnerability/CVE-2019-19794",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2019-19794",
    "summary": "The miekg Go DNS package before 1.1.25, as used in CoreDNS before 1.6.6 and other products, improperly generates random numbers because math/rand is used. The TXID becomes predictable, leading to response forgeries.",
    "evidence": "osv:CVE-2019-19794",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2019-19794",
      "aliases": [
        "CVE-2019-19794",
        "GHSA-44r7-7p62-q3fr",
        "GO-2020-0008"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/miekg/dns",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "aae7df65e6178e7937664e9c3036f62fc2098d7c"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:miekg-dns_project:miekg-dns:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.1.25"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.1.24",
            "v1.1.23",
            "v1.1.22",
            "v1.1.21",
            "v1.1.20",
            "v1.1.19",
            "v1.1.18",
            "v1.1.17",
            "v1.1.16",
            "v1.1.15",
            "v1.1.14",
            "v1.1.13",
            "v1.1.12",
            "v1.1.11",
            "v1.1.10",
            "v1.1.9",
            "v1.1.8",
            "v1.1.7",
            "v1.1.6",
            "v1.1.5",
            "v1.1.4",
            "v1.1.3",
            "v1.1.2",
            "v1.1.1",
            "v1.1.0",
            "v1.0.15",
            "v1.0.14",
            "v1.0.13",
            "v1.0.12",
            "v1.0.11",
            "v1.0.10",
            "v1.0.9",
            "v1.0.8",
            "v1.0.7",
            "v1.0.6",
            "v1.0.5",
            "v1.0.4",
            "v1.0.3",
            "v1.0.1",
            "v1.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-19794.json"
          }
        }
      ],
      "modified": "2026-10-20T10:52:32.796616154Z",
      "provider": "osv",
      "references": [
        "https://github.com/coredns/coredns/issues/3547",
        "https://github.com/miekg/dns/compare/v1.1.24...v1.1.25",
        "https://github.com/coredns/coredns/issues/3519",
        "https://github.com/miekg/dns/issues/1043",
        "https://github.com/miekg/dns/pull/1044"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2019-19794",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 383683,
  "published_at": "2019-12-13T22:15:11.357+00:00"
}