{
  "schema_version": "1.4.0",
  "id": "GHSA-j44m-qm6p-hp7m",
  "modified": "2023-11-29T22:25:48Z",
  "published": "2019-05-01T18:37:31Z",
  "aliases": [
    "CVE-2018-20834"
  ],
  "summary": "Arbitrary File Overwrite in tar",
  "details": "Versions of `tar` prior to 4.4.2 for 4.x and 2.2.2 for 2.x are vulnerable to Arbitrary File Overwrite. Extracting tarballs containing a hardlink to a file that already exists in the system, and a file that matches the hardlink will overwrite the system's file with the contents of the extracted file.\n\n\n## Recommendation\n\nFor tar 4.x, upgrade to version 4.4.2 or later.\nFor tar 2.x, upgrade to version 2.2.2 or later.",
  "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"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "3.0.0"
            },
            {
              "fixed": "4.4.2"
            }
          ]
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "tar"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.2.2"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-20834"
    },
    {
      "type": "WEB",
      "url": "https://github.com/npm/node-tar/commit/7ecef07da6a9e72cc0c4d0c9c6a8e85b6b52395d"
    },
    {
      "type": "WEB",
      "url": "https://github.com/npm/node-tar/commit/b0c58433c22f5e7fe8b1c76373f27e3f81dcd4c8"
    },
    {
      "type": "WEB",
      "url": "https://hackerone.com/reports/344595"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2019:1821"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/isaacs/node-tar"
    },
    {
      "type": "WEB",
      "url": "https://github.com/npm/node-tar/commits/v2.2.2"
    },
    {
      "type": "WEB",
      "url": "https://github.com/npm/node-tar/compare/58a8d43...a5f7779"
    }
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-59"
    ],
    "severity": "HIGH",
    "github_reviewed": true,
    "github_reviewed_at": "2019-05-01T18:35:41Z",
    "nvd_published_at": null
  }
}