Security advisory

{
  "id": "997c0f0a6e7de2837a18adee69405207906046ede290740be2f6f62088cc827f",
  "url": "https://osv.dev/vulnerability/CVE-2018-17974",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2018-17974",
    "summary": "An issue was discovered in Tcpreplay 4.3.0 beta1. A heap-based buffer over-read was triggered in the function dlt_en10mb_encode() of the file plugins/dlt_en10mb/en10mb.c, due to inappropriate values in the function memmove(). The length (pktlen + ctx -> l2len) can be larger than source value (packet + ctx->l2len) because the function fails to ensure the length of a packet is valid. This leads to Denial of Service.",
    "evidence": "osv:CVE-2018-17974",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2018-17974",
      "aliases": [
        "CVE-2018-17974"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/appneta/tcpreplay",
              "type": "GIT",
              "events": [
                {
                  "introduced": "b663095bd87b60822d4b8688a48040c8f88fd045"
                },
                {
                  "last_affected": "b663095bd87b60822d4b8688a48040c8f88fd045"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:broadcom:tcpreplay:4.3.0:beta1:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.3.0-beta1"
                      },
                      {
                        "last_affected": "4.3.0-beta1"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "4.3.0-beta1",
            "v4.3.0-beta1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-17974.json"
          }
        }
      ],
      "modified": "2026-10-20T10:49:53.035158909Z",
      "provider": "osv",
      "references": [
        "https://github.com/SegfaultMasters/covering360/tree/master/tcpreplay",
        "https://github.com/appneta/tcpreplay/issues/486"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2018-17974",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 380913,
  "published_at": "2018-10-03T22:29:00.907+00:00"
}