Headline
CVE-2022-24723: Leading white space bypasses protocol validation
URI.js is a Javascript URL mutation library. Before version 1.19.9, whitespace characters are not removed from the beginning of the protocol, so URLs are not parsed properly. This issue has been patched in version 1.19.9. Removing leading whitespace from values before passing them to URI.parse can be used as a workaround.
Impact
Whitespace characters are not removed from the beginning of the protocol, so URLs are not parsed properly and protocol validation mechanisms may fail.
Patches
Patched in 1.19.9
Workarounds
Remove leading whitespace from values before passing them to URI.parse (e.g. via .href(value) or new URI(value)), e.g. by using
function remove_whitespace(url){ const whitespace = /^[\x00-\x20\u00a0\u1680\u2000-\u200a\u2028\u2029\u202f\u205f\u3000\ufeff]+/; url = url.replace(whitespace, ‘’) return url }
References
- https://huntr.dev/bounties/82ef23b8-7025-49c9-b5fc-1bb9885788e5/
For more information
If you have any questions or comments about this advisory:
- Open an issue in medialize/URI.js
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