GHSA-CF4Q-4CQR-7G7W

Vulnerability from github – Published: 2022-04-22 20:25 – Updated: 2022-04-22 20:25
VLAI
Summary
SVG with embedded scripts can lead to cross-site scripting attacks in xml2rfc
Details

xml2rfc allows script elements in SVG sources. In HTML output having these script elements can lead to XSS attacks.

Sample XML snippet:

<artwork type="svg" src="data:image/svg+xml,%3Csvg viewBox='0 0 10 10' xmlns='http://www.w3.org/2000/svg'%3E%3Cscript%3E window.alert('Test Alert'); %3C/script%3E%3C/svg%3E">
</artwork>

Impact

This vulnerability impacts website that publish HTML drafts and RFCs.

Patches

This has been fixed in version 3.12.4.

Workarounds

If SVG source is self-contained within the XML, scraping script elements from SVG files.

References

  • https://developer.mozilla.org/en-US/docs/Web/SVG/Element/script

For more information

If you have any questions or comments about this advisory: * Open an issue in xml2rfc * Email us at operational-vulnerability@ietf.org * Infrastructure and Services Vulnerability Disclosure

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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "xml2rfc"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.12.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-04-22T20:25:53Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "xml2rfc allows `script` elements in SVG sources.\nIn HTML output having these script elements can lead to XSS attacks.\n\nSample XML snippet:\n```\n\u003cartwork type=\"svg\" src=\"data:image/svg+xml,%3Csvg viewBox=\u00270 0 10 10\u0027 xmlns=\u0027http://www.w3.org/2000/svg\u0027%3E%3Cscript%3E window.alert(\u0027Test Alert\u0027); %3C/script%3E%3C/svg%3E\"\u003e\n\u003c/artwork\u003e\n```\n\n### Impact\nThis vulnerability impacts website that publish HTML drafts and RFCs.\n\n### Patches\nThis has been fixed in version [3.12.4](https://github.com/ietf-tools/xml2rfc/releases/tag/v3.12.4).\n\n### Workarounds\nIf SVG source is self-contained within the XML, scraping `script` elements from SVG files.\n\n### References\n* https://developer.mozilla.org/en-US/docs/Web/SVG/Element/script\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [xml2rfc](https://github.com/ietf-tools/xml2rfc/)\n* Email us at [operational-vulnerability@ietf.org](mailto:operational-vulnerability@ietf.org)\n* [Infrastructure and Services Vulnerability Disclosure](https://www.ietf.org/about/administration/policies-procedures/vulnerability-disclosure/)\n",
  "id": "GHSA-cf4q-4cqr-7g7w",
  "modified": "2022-04-22T20:25:53Z",
  "published": "2022-04-22T20:25:53Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/ietf-tools/xml2rfc/security/advisories/GHSA-cf4q-4cqr-7g7w"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/ietf-tools/xml2rfc"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [],
  "summary": "SVG with embedded scripts can lead to cross-site scripting attacks in xml2rfc"
}



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