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Closes issue #420 #423

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ChandraShekharAgrawal
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Types of changes

What types of changes does your code introduce? Check all the boxes that apply:

  • Bug fix (non-breaking change which fixes an issue)

Description

  • Edited anchorURLs function that fixes issue of cross site scripting.

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  • My code follows the code style of this project.
  • My change requires a change to the documentation.
  • I have updated the documentation accordingly.
  • I have read the CONTRIBUTING guidelines.
  • All tests passed.

@shakeelmohamed shakeelmohamed self-assigned this Sep 23, 2023
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Great start on this issue, I’ve included the full screenshot of all vulnerable code paths.
There are other areas we have the same issue like:

  • makeListenURL() (which addresses anchorTimestamps())
  • makeSearchURL()

Perhaps we can address all of these with adding encodeURI() inside cleanURL(), will need some manual testing. See my inline comment.

If you’re up for it, I would love to see some tests added for this area!

screencapture-github-zen-audio-player-zen-audio-player-github-io-security-code-scanning-3-2023-09-26-22_58_11

// Use a function to replace matches
return text.replace(re, function(match) {
// Escape the match to prevent XSS
var url = encodeURIComponent(match);
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Thanks for the PR @ChandraShekharAgrawal!

We actually want encodeURI(match) here instead, otherwise we will get invalid URLs.

e.g.

If match is http://smarturl.it/outlines, then url becomes a non-valid URL http%3A%2F%2Fsmarturl.it%2Foutlines, which is then interpreted by the browser as http://localhost:8080/http%3A%2F%2Fsmarturl.it%2Foutlines when running locally.

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You can test this yourself locally after you run npm install and npm start...

  1. Go to http://localhost:8080/?v=03O2yKUgrKw (or other video with links in the description, this is one of our demo videos).
  2. Click Show Description
  3. Inspect any links in the browser

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@ChandraShekharAgrawal hi, any chance you can revisit this?

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2 participants