ghsa-8j65-4pcq-xq95
Vulnerability from github
Impact
In Highcharts versions 8 and earlier, the chart options structure was not systematically filtered for XSS vectors. The potential impact was that content from untrusted sources could execute code in the end user's browser. Especially when using the useHTML flag, HTML string options would be inserted unfiltered directly into the DOM. When useHTML was false, malicious code could be inserted by using various character replacement tricks or malformed HTML.
If your chart configuration comes from a trusted source like a static setup or pre-filtered HTML (or no markup at all in the configuration), you are not impacted.
Patches
In version 9, the whole rendering layer was refactored to use an DOMParser, an AST and tag and HTML allow-listing to make sure only safe content entered the DOM. In addition, prototype pollution was stopped.
Workarounds
Implementers who are not able to upgrade may apply DOMPurify recursively to the options structure to filter out malicious markup.
References
- Details on the improved Highcharts security
- The AST and TextBuilder refactoring
- The fix for prototype pollution
For more information
If you have any questions or comments about this advisory: * Visit our support page * For more Email us at security@highcharts.com
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "highcharts"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "9.0.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2021-29489"
],
"database_specific": {
"cwe_ids": [
"CWE-79"
],
"github_reviewed": true,
"github_reviewed_at": "2021-05-05T15:37:11Z",
"nvd_published_at": "2021-05-05T16:15:00Z",
"severity": "HIGH"
},
"details": "### Impact\nIn Highcharts versions 8 and earlier, the chart options structure was not systematically filtered for XSS vectors. The potential impact was that content from untrusted sources could execute code in the end user\u0027s browser. Especially when using the `useHTML` flag, HTML string options would be inserted unfiltered directly into the DOM. When `useHTML` was false, malicious code could be inserted by using various character replacement tricks or malformed HTML.\n\nIf your chart configuration comes from a trusted source like a static setup or pre-filtered HTML (or no markup at all in the configuration), you are not impacted.\n\n### Patches\nIn version 9, the whole rendering layer was refactored to use an DOMParser, an AST and tag and HTML allow-listing to make sure only safe content entered the DOM. In addition, prototype pollution was stopped.\n\n### Workarounds\nImplementers who are not able to upgrade may apply [DOMPurify](https://github.com/cure53/DOMPurify) recursively [to the options structure](https://jsfiddle.net/highcharts/zd3wcm5L/) to filter out malicious markup.\n\n### References\n* Details on the improved [Highcharts security](https://www.highcharts.com/docs/chart-concepts/security)\n* [The AST and TextBuilder refactoring](https://github.com/highcharts/highcharts/pull/14913)\n* [The fix for prototype pollution](https://github.com/highcharts/highcharts/pull/14884)\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Visit our [support page](https://www.highcharts.com/blog/support/)\n* For more Email us at [security@highcharts.com](mailto:security@highcharts.com)\n",
"id": "GHSA-8j65-4pcq-xq95",
"modified": "2022-06-06T18:17:02Z",
"published": "2021-05-06T15:45:03Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/highcharts/highcharts/security/advisories/GHSA-8j65-4pcq-xq95"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-29489"
},
{
"type": "PACKAGE",
"url": "https://github.com/highcharts/highcharts"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20210622-0005"
},
{
"type": "WEB",
"url": "https://www.npmjs.com/package/highcharts"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L",
"type": "CVSS_V3"
}
],
"summary": "Options structure open to Cross-site Scripting if passed unfiltered"
}
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.