{
  "canonical_id": "rails--CVE-2011-3187",
  "system_id": "rails",
  "display_name": "Ruby on Rails",
  "category": "frameworks",
  "advisory_mode": "core",
  "title": "CVE-2011-3187",
  "summary": "The to_s method in actionpack/lib/action_dispatch/middleware/remote_ip.rb in Ruby on Rails 3.0.5 does not validate the X-Forwarded-For header in requests from IP addresses on a Class C network, which might allow remote attackers to inject arbitrary text into log files or bypass intended address parsing via a crafted header.",
  "published_at": "2011-08-29T18:55:01.707",
  "updated_at": "2025-04-11T00:51:21.963",
  "severity": "medium",
  "cvss_score": 4.3,
  "exploit_status": "unknown",
  "source_confidence": "ecosystem-authority",
  "official_source_url": "http://archives.neohapsis.com/archives/fulldisclosure/2011-02/0337.html",
  "secondary_source_urls": [
    "http://webservsec.blogspot.com/2011/02/ruby-on-rails-vulnerability.html",
    "http://www.openwall.com/lists/oss-security/2011/08/17/1",
    "http://www.openwall.com/lists/oss-security/2011/08/19/11",
    "http://www.openwall.com/lists/oss-security/2011/08/20/1",
    "http://www.openwall.com/lists/oss-security/2011/08/22/13",
    "http://www.openwall.com/lists/oss-security/2011/08/22/14",
    "http://www.openwall.com/lists/oss-security/2011/08/22/5",
    "https://bugzilla.novell.com/show_bug.cgi?id=673010"
  ],
  "aliases": [
    "CVE-2011-3187"
  ],
  "cve_ids": [
    "CVE-2011-3187"
  ],
  "ghsa_ids": [],
  "osv_ids": [],
  "affected_versions": [],
  "fixed_versions": [],
  "package_name": null,
  "render_markdown": false,
  "case_path": null,
  "secure_code_topics": [
    "xss-output-encoding",
    "file-upload-validation",
    "authz-server-side-recheck",
    "proxy-trust-boundary"
  ],
  "status": "triage",
  "triage_reasons": [
    "missing affected/fixed version details"
  ],
  "verification_status": "triage-manual",
  "verification_mode": "synthetic",
  "last_verified_at": null,
  "last_run_id": null,
  "evidence_bundle": null,
  "historical_status": null,
  "latest_status": null,
  "browser_evidence": {
    "required": false,
    "present": false,
    "refs": []
  },
  "repro_profile_id": "xss-generic",
  "artifact_mode": "synthetic",
  "blocked_reason": null,
  "metadata": {
    "source_names": [
      "NVD Ruby on Rails"
    ],
    "source_kinds": [
      "nvd-search"
    ],
    "candidate_count": 1
  }
}