GHSA-WVHM-4HHF-97X9

Vulnerability from github – Published: 2020-08-07 22:28 – Updated: 2021-01-07 23:41
VLAI?
Summary
Cross-Site Scripting in Prism
Details

Impact

The easing preview of the Previewers plugin has an XSS vulnerability that allows attackers to execute arbitrary code in Safari and Internet Explorer.

This impacts all Safari and Internet Explorer users of Prism >=v1.1.0 that use the Previewers plugin (>=v1.10.0) or the Previewer: Easing plugin (v1.1.0 to v1.9.0).

Patches

This problem is patched in v1.21.0.

Workarounds

To workaround the issue without upgrading, disable the easing preview on all impacted code blocks. You need Prism v1.10.0 or newer to apply this workaround.

References

The vulnerability was introduced by this commit on Sep 29, 2015 and fixed by Masato Kinugawa (#2506).

For more information

If you have any questions or comments about this advisory, please open an issue.

Severity ?
7.1 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L
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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "prismjs"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.1.0"
            },
            {
              "fixed": "1.21.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2020-15138"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2020-08-07T16:19:07Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "### Impact\nThe easing preview of the Previewers plugin has an XSS vulnerability that allows attackers to execute arbitrary code in Safari and Internet Explorer.\n\nThis impacts all Safari and Internet Explorer users of Prism \u003e=v1.1.0 that use the _Previewers_ plugin (\u003e=v1.10.0) or the _Previewer: Easing_ plugin (v1.1.0 to v1.9.0).\n\n### Patches\nThis problem is patched in v1.21.0.\n\n### Workarounds\nTo workaround the issue without upgrading, [disable the easing preview](https://prismjs.com/plugins/previewers/#disabling-a-previewer) on all impacted code blocks. You need Prism v1.10.0 or newer to apply this workaround.\n\n### References\nThe vulnerability was introduced by this [commit](https://github.com/PrismJS/prism/commit/4303c940d3d3a20e8ce7635bf23331c75060f5c5) on Sep 29, 2015 and fixed by [Masato Kinugawa](https://twitter.com/kinugawamasato) (#2506).\n\n### For more information\nIf you have any questions or comments about this advisory, please [open an issue](https://github.com/PrismJS/prism/issues).",
  "id": "GHSA-wvhm-4hhf-97x9",
  "modified": "2021-01-07T23:41:49Z",
  "published": "2020-08-07T22:28:30Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/PrismJS/prism/security/advisories/GHSA-wvhm-4hhf-97x9"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-15138"
    },
    {
      "type": "WEB",
      "url": "https://github.com/PrismJS/prism/pull/2506/commits/7bd7de05edf71112a3a77f87901a2409c9c5c20c"
    },
    {
      "type": "WEB",
      "url": "https://prismjs.com/plugins/previewers/#disabling-a-previewer"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Cross-Site Scripting in Prism"
}


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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.