{
  "schema_version": "1.4.0",
  "id": "GHSA-5g4w-3m99-4m2p",
  "modified": "2022-05-13T01:51:03Z",
  "published": "2022-05-13T01:51:03Z",
  "aliases": [
    "CVE-2018-20421"
  ],
  "details": "Go Ethereum (aka geth) 1.8.19 allows attackers to cause a denial of service (memory consumption) by rewriting the length of a dynamic array in memory, and then writing data to a single memory location with a large index number, as demonstrated by use of \"assembly { mstore }\" followed by a \"c[0xC800000] = 0xFF\" assignment.",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
    }
  ],
  "affected": [],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-20421"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ethereum/go-ethereum/issues/18289"
    }
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-770"
    ],
    "severity": "HIGH",
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2018-12-24T03:29:00Z"
  }
}