GHSA-2MM9-C2FX-C7M4

Vulnerability from github – Published: 2021-03-01 19:44 – Updated: 2023-09-13 20:21
VLAI?
Summary
Docsify XSS Vulnerability
Details

This affects the package docsify before 4.12.0. It is possible to bypass the remediation done by CVE-2020-7680 and execute malicious JavaScript through the following methods 1) When parsing HTML from remote URLs, the HTML code on the main page is sanitized, but this sanitization is not taking place in the sidebar. 2) The isURL external check can be bypassed by inserting more //// characters

Severity ?
6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "docsify"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.12.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-23342"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-02-24T07:31:57Z",
    "nvd_published_at": "2021-02-19T17:15:00Z",
    "severity": "MODERATE"
  },
  "details": "This affects the package docsify before 4.12.0. It is possible to bypass the remediation done by CVE-2020-7680 and execute malicious JavaScript through the following methods 1) When parsing HTML from remote URLs, the HTML code on the main page is sanitized, but this sanitization is not taking place in the sidebar. 2) The isURL external check can be bypassed by inserting more `////` characters",
  "id": "GHSA-2mm9-c2fx-c7m4",
  "modified": "2023-09-13T20:21:27Z",
  "published": "2021-03-01T19:44:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-23342"
    },
    {
      "type": "WEB",
      "url": "https://github.com/docsifyjs/docsify/commit/ff2a66f12752471277fe81a64ad6c4b2c08111fe"
    },
    {
      "type": "WEB",
      "url": "https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1076593"
    },
    {
      "type": "WEB",
      "url": "https://snyk.io/vuln/SNYK-JS-DOCSIFY-1066017"
    },
    {
      "type": "WEB",
      "url": "https://www.npmjs.com/package/docsify"
    },
    {
      "type": "WEB",
      "url": "http://packetstormsecurity.com/files/161495/docsify-4.11.6-Cross-Site-Scripting.html"
    },
    {
      "type": "WEB",
      "url": "http://seclists.org/fulldisclosure/2021/Feb/71"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Docsify XSS Vulnerability"
}


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  • 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.
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  • 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.



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