{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": [
              "cpe:2.3:a:matroska:mkclean:0.8.9:*:*:*:*:*:*:*",
              "cpe:2.3:a:matroska:mkvalidator:0.5.1:*:*:*:*:*:*:*"
            ],
            "extracted_events": [
              {
                "introduced": "0.8.9"
              },
              {
                "last_affected": "0.8.9"
              },
              {
                "introduced": "0.5.1"
              },
              {
                "last_affected": "0.5.1"
              }
            ],
            "source": "CPE_STRING"
          },
          "events": [
            {
              "introduced": "d5bcb70f2a7b0da788cc844f19734a20489acc59"
            },
            {
              "last_affected": "377eab34f9befa6846159f8a2176e054ce3e0ae6"
            }
          ],
          "repo": "https://github.com/matroska-org/foundation-source",
          "type": "GIT"
        }
      ],
      "versions": [
        "0.5.1",
        "0.8.9"
      ]
    }
  ],
  "database_specific": {
    "unresolved_ranges": [
      {
        "cpes": [
          "cpe:2.3:a:matroska:libebml2:*:*:*:*:*:*:*:*"
        ],
        "extracted_events": [
          {
            "last_affected": "2012-08-26"
          }
        ],
        "source": "CPE_RANGE",
        "vendor_product": "matroska:libebml2"
      }
    ]
  },
  "details": "The UpdateDataSize function in ebmlmaster.c in libebml2 through 2012-08-26 allows remote attackers to cause a denial of service (assert fault) via a crafted mkv file.",
  "id": "CVE-2017-12801",
  "modified": "2026-07-08T05:38:45.930303998Z",
  "published": "2017-11-10T02:29:17.513Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "http://packetstormsecurity.com/files/144902/mkvalidator-0.5.1-Denial-Of-Service.html"
    },
    {
      "type": "EVIDENCE",
      "url": "http://seclists.org/fulldisclosure/2017/Nov/19"
    },
    {
      "type": "EVIDENCE",
      "url": "https://github.com/Matroska-Org/foundation-source/issues/24"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}