Security advisory

{
  "id": "0135a4b29c30c022c9aef089b3e2d4e621057cb593f52c9a81a13470ca2c7914",
  "url": "https://osv.dev/vulnerability/CVE-2019-16411",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2019-16411",
    "summary": "An issue was discovered in Suricata 4.1.4. By sending multiple IPv4 packets that have invalid IPv4Options, the function IPV4OptValidateTimestamp in decode-ipv4.c tries to access a memory region that is not allocated. There is a check for o->len < 5 (corresponding to 2 bytes of header and 3 bytes of data). Then, \"flag = *(o->data + 3)\" places one beyond the 3 bytes, because the code should have been \"flag = *(o->data + 1)\" instead.",
    "evidence": "osv:CVE-2019-16411",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2019-16411",
      "aliases": [
        "CVE-2019-16411"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/oisf/suricata",
              "type": "GIT",
              "events": [
                {
                  "introduced": "14c2b6e445b3e8b5f802c4538397c12bfd3f831d"
                },
                {
                  "last_affected": "14c2b6e445b3e8b5f802c4538397c12bfd3f831d"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:suricata-ids:suricata:4.1.4:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.1.4"
                      },
                      {
                        "last_affected": "4.1.4"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "4.1.4",
            "suricata-4.1.4"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-16411.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:50.855251338Z",
      "provider": "osv",
      "references": [
        "https://www.code-intelligence.com/cve-2019-16411",
        "https://lists.openinfosecfoundation.org/pipermail/oisf-announce/",
        "https://suricata-ids.org/2019/09/24/suricata-4-1-5-released/"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2019-16411",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 437350,
  "published_at": "2019-09-24T20:15:11.967+00:00"
}