{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "4.1.4"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "14c2b6e445b3e8b5f802c4538397c12bfd3f831d"
            }
          ],
          "repo": "https://github.com/oisf/suricata",
          "type": "GIT"
        }
      ]
    }
  ],
  "details": "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-\u003elen \u003c 5 (corresponding to 2 bytes of header and 3 bytes of data). Then, \"flag = *(o-\u003edata + 3)\" places one beyond the 3 bytes, because the code should have been \"flag = *(o-\u003edata + 1)\" instead.",
  "id": "CVE-2019-16411",
  "modified": "2026-03-13T21:52:18.541505235Z",
  "published": "2019-09-24T20:15:11.967Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://www.code-intelligence.com/cve-2019-16411"
    },
    {
      "type": "ADVISORY",
      "url": "https://lists.openinfosecfoundation.org/pipermail/oisf-announce/"
    },
    {
      "type": "ADVISORY",
      "url": "https://suricata-ids.org/2019/09/24/suricata-4-1-5-released/"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}