ghsa-5xf4-f2fq-f69j
Vulnerability from github
Published
2020-02-14 23:10
Modified
2023-09-08 22:40
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Summary
Yarn Improper link resolution before file access (Link Following)
Details

In Yarn before 1.21.1, the package install functionality can be abused to generate arbitrary symlinks on the host filesystem by using specially crafted "bin" keys. Existing files could be overwritten depending on the current user permission set.

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{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 1.21.1"
      },
      "package": {
        "ecosystem": "npm",
        "name": "yarn"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.22.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2019-10773"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-78"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2020-02-13T21:01:35Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "In Yarn before 1.21.1, the package install functionality can be abused to generate arbitrary symlinks on the host filesystem by using specially crafted \"bin\" keys. Existing files could be overwritten depending on the current user permission set.",
  "id": "GHSA-5xf4-f2fq-f69j",
  "modified": "2023-09-08T22:40:47Z",
  "published": "2020-02-14T23:10:16Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-10773"
    },
    {
      "type": "WEB",
      "url": "https://github.com/yarnpkg/yarn/issues/7761#issuecomment-565493023"
    },
    {
      "type": "WEB",
      "url": "https://github.com/yarnpkg/yarn/pull/7755"
    },
    {
      "type": "WEB",
      "url": "https://github.com/yarnpkg/yarn/commit/039bafd74b7b1a88a53a54f8fa6fa872615e90e7"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2020:0475"
    },
    {
      "type": "WEB",
      "url": "https://blog.daniel-ruf.de/critical-design-flaw-npm-pnpm-yarn"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3HIZW4NZVV5QY5WWGW2JRP3FHYKZ6ZJ5"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ITY5BC63CCC647DFNUQRQ5AJDKUKUNBI"
    },
    {
      "type": "WEB",
      "url": "https://snyk.io/vuln/SNYK-JS-YARN-537806,"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Yarn Improper link resolution before file access (Link Following)"
}


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