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hsec-2023-0006
Vulnerability from osv_haskell
Published
2025-11-14 14:45
Modified
2025-11-14 14:45
Summary
x509-validation does not enforce pathLenConstraint
Details

x509-validation does not enforce pathLenConstraint

x509-validation prior to version 1.4.8 did not enforce the pathLenConstraint value. Constrained CAs could accidentally (or deliberately) issue CAs below the maximum depth and x509-validation would accept certificates issued by the unauthorised intermediate CAs.

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "human_link": "https://github.com/haskell/security-advisories/tree/main/advisories/published/2023/HSEC-2023-0006.md",
        "osv": "https://raw.githubusercontent.com/haskell/security-advisories/refs/heads/generated/osv-export/2023/HSEC-2023-0006.json"
      },
      "package": {
        "ecosystem": "Hackage",
        "name": "x509-validation"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.4.0"
            },
            {
              "fixed": "1.4.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "severity": [
        {
          "score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:N",
          "type": "CVSS_V3"
        }
      ]
    }
  ],
  "database_specific": {
    "home": "https://github.com/haskell/security-advisories",
    "osvs": "https://raw.githubusercontent.com/haskell/security-advisories/refs/heads/generated/osv-export",
    "repository": "https://github.com/haskell/security-advisories"
  },
  "details": "# x509-validation does not enforce pathLenConstraint\n\n*x509-validation* prior to version 1.4.8 did not enforce the\npathLenConstraint value.  Constrained CAs could accidentally (or\ndeliberately) issue CAs below the maximum depth and\n*x509-validation* would accept certificates issued by the\nunauthorised intermediate CAs.\n",
  "id": "HSEC-2023-0006",
  "modified": "2025-11-14T14:45:34Z",
  "published": "2025-11-14T14:45:34Z",
  "references": [
    {
      "type": "FIX",
      "url": "https://github.com/haskell-tls/hs-certificate/commit/06d15dbbc53739314760d8504ca764000770e46e"
    }
  ],
  "schema_version": "1.5.0",
  "summary": "x509-validation does not enforce pathLenConstraint"
}



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