Security advisory

{
  "id": "174dced85a94ae2492f3aec92cc7f0cd71214c56571c1b3b4d731f8b5e99f00e",
  "url": "https://osv.dev/vulnerability/CVE-2019-18934",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2019-18934",
    "summary": "Unbound 1.6.4 through 1.9.4 contain a vulnerability in the ipsec module that can cause shell code execution after receiving a specially crafted answer. This issue can only be triggered if unbound was compiled with `--enable-ipsecmod` support, and ipsecmod is enabled and used in the configuration.",
    "evidence": "osv:CVE-2019-18934",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2019-18934",
      "aliases": [
        "CVE-2019-18934"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/nlnetlabs/unbound",
              "type": "GIT",
              "events": [
                {
                  "introduced": "ac98f4806f91599266a1d83887a243eb46f68106"
                },
                {
                  "last_affected": "b60c4a472c856f0a98120b7259e991b3a6507eb5"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:nlnetlabs:unbound:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.6.4"
                      },
                      {
                        "last_affected": "1.9.4"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-18934.json"
          }
        }
      ],
      "modified": "2026-10-20T10:52:30.634341468Z",
      "provider": "osv",
      "references": [
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MOCR6JP7MSRARTOGEHGST64G4FJGX5VK/",
        "https://github.com/NLnetLabs/unbound/blob/release-1.9.5/doc/Changelog",
        "https://www.nlnetlabs.nl/news/2019/Nov/19/unbound-1.9.5-released/",
        "https://www.nlnetlabs.nl/downloads/unbound/CVE-2019-18934.txt"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*"
            ],
            "vendor_product": "fedoraproject:fedora",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "31"
                  },
                  {
                    "last_affected": "31"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*",
              "cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*"
            ],
            "vendor_product": "opensuse:leap",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "15.1"
                  },
                  {
                    "last_affected": "15.1"
                  },
                  {
                    "introduced": "15.2"
                  },
                  {
                    "last_affected": "15.2"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2019-18934",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 383674,
  "published_at": "2019-11-19T18:15:10.523+00:00"
}