ghsa-5x79-w82f-gw8w
Vulnerability from github
Published
2022-12-13 17:43
Modified
2025-11-04 16:41
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
Inefficient Regular Expression Complexity in rails-html-sanitizer
Details

Summary

Certain configurations of rails-html-sanitizer < 1.4.4 use an inefficient regular expression that is susceptible to excessive backtracking when attempting to sanitize certain SVG attributes. This may lead to a denial of service through CPU resource consumption.

Mitigation

Upgrade to rails-html-sanitizer >= 1.4.4.

Severity

The maintainers have evaluated this as High Severity 7.5 (CVSS3.1).

References

Credit

This vulnerability was responsibly reported by @ooooooo-q (https://github.com/ooooooo-q).

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{
  "affected": [
    {
      "package": {
        "ecosystem": "RubyGems",
        "name": "rails-html-sanitizer"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.4.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2022-23517"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1333"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-12-13T17:43:02Z",
    "nvd_published_at": "2022-12-14T17:15:00Z",
    "severity": "HIGH"
  },
  "details": "## Summary\n\nCertain configurations of rails-html-sanitizer `\u003c 1.4.4` use an inefficient regular expression that is susceptible to excessive backtracking when attempting to sanitize certain SVG attributes. This may lead to a denial of service through CPU resource consumption.\n\n\n## Mitigation\n\nUpgrade to rails-html-sanitizer `\u003e= 1.4.4`.\n\n\n## Severity\n\nThe maintainers have evaluated this as [High Severity 7.5 (CVSS3.1)](https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).\n\n\n## References\n\n- [CWE - CWE-1333: Inefficient Regular Expression Complexity (4.9)](https://cwe.mitre.org/data/definitions/1333.html)\n- https://hackerone.com/reports/1684163\n\n\n## Credit\n\nThis vulnerability was responsibly reported by @ooooooo-q (https://github.com/ooooooo-q).",
  "id": "GHSA-5x79-w82f-gw8w",
  "modified": "2025-11-04T16:41:23Z",
  "published": "2022-12-13T17:43:02Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/rails/rails-html-sanitizer/security/advisories/GHSA-5x79-w82f-gw8w"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-23517"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rails/rails-html-sanitizer/commit/56c61c0cebd1e493e8ad7bca2a0191609a4a6979"
    },
    {
      "type": "WEB",
      "url": "https://hackerone.com/reports/1684163"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/rails/rails-html-sanitizer"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rails-html-sanitizer/CVE-2022-23517.yml"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2023/09/msg00012.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2024/09/msg00045.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Inefficient Regular Expression Complexity in rails-html-sanitizer"
}


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