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block javascript urls in @alifd/biz-anchor #142

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@gtsp233 gtsp233 commented Jan 20, 2024

Fix for Cross-Site Scripting (XSS) Vulnerability

I've identified a Cross-Site Scripting (XSS) vulnerability in this package. Any React.js application using this package is vulnerable to XSS attacks.

Vulnerability Details:

  • Severity: High/Critical
  • Description: There's a risk of malicious script execution when the href of the a tag is controlled by an adversary.

Steps to Reproduce:
In a React.js project:

import { Link } from '@alifd/biz-anchor'

<Link href={`javascript:alert(1)`} />

Then the malicious code alert(1) will be executed.

Suggested Fix or Mitigation:
It is best practice for a React.js components package to sanitize the href attribute before passing it to an tag. React.js and many popular libraries such as react-router-dom and Next.js also ensure the safety of href attributes. For instance, React.js issues warnings about URLs starting with javascript: and is planning to block these in future versions, as indicated in this pull request.

I've already fixed and tested this issue, and have submitted a pull request with the necessary changes. Please review and merge my pull request to resolve this vulnerability. Thanks!

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