{
  "schema_version": "1.4.0",
  "id": "GHSA-x2mc-8fgj-3wmr",
  "modified": "2021-08-03T21:27:51Z",
  "published": "2019-05-01T18:37:18Z",
  "aliases": [
    "CVE-2018-20835"
  ],
  "summary": "Improper Input Validation in tar-fs",
  "details": "A vulnerability was found in tar-fs before 1.16.2. An Arbitrary File Overwrite issue exists when extracting a tarball containing a hardlink to a file that already exists on the system, in conjunction with a later plain file with the same name as the hardlink. This plain file content replaces the existing file content.",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
    }
  ],
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "tar-fs"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.16.2"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-20835"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mafintosh/tar-fs/commit/06672828e6fa29ac8551b1b6f36c852a9a3c58a2"
    },
    {
      "type": "WEB",
      "url": "https://hackerone.com/reports/344595"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mafintosh/tar-fs/compare/d590fc7...a35ce2f"
    }
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20"
    ],
    "severity": "HIGH",
    "github_reviewed": true,
    "github_reviewed_at": "2019-05-01T18:25:25Z",
    "nvd_published_at": "2019-04-30T19:29:00Z"
  }
}