Security advisory

{
  "id": "4a0bc24e98a84e79f1fe0e2432ebdb7c3fb70004590b69a3958b6bba8863a418",
  "url": "https://osv.dev/vulnerability/CVE-2017-0904",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2017-0904",
    "summary": "The private_address_check ruby gem before 0.4.0 is vulnerable to a bypass due to use of Ruby's Resolv.getaddresses method, which is OS-dependent and should not be relied upon for security measures, such as when used to blacklist private network addresses to prevent server-side request forgery.",
    "evidence": "osv:CVE-2017-0904",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2017-0904",
      "aliases": [
        "CVE-2017-0904",
        "GHSA-hxhj-hp9m-qwc4"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/jtdowney/private_address_check",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "e76cadab736ee5c30d7d4c5220db9d42488d1e1e"
                },
                {
                  "fixed": "58a0d7fe31de339c0117160567a5b33ad82b46af"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:private_address_check_project:private_address_check:*:*:*:*:*:ruby:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.4.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "58a0d7fe31de339c0117160567a5b33ad82b46af"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.3.0",
            "v0.2.0",
            "v0.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-0904.json"
          }
        }
      ],
      "modified": "2026-10-20T10:48:06.513242106Z",
      "provider": "osv",
      "references": [
        "https://github.com/jtdowney/private_address_check/commit/58a0d7fe31de339c0117160567a5b33ad82b46af",
        "https://edoverflow.com/2017/ruby-resolv-bug/",
        "https://github.com/jtdowney/private_address_check/issues/1",
        "https://hackerone.com/reports/287835",
        "https://hackerone.com/reports/287245"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2017-0904",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 380044,
  "published_at": "2017-11-13T17:29:00.347+00:00"
}