Description
URI.js is a javascript URL mutation library (npm package urijs). In URI.js before version 1.19.4, the hostname can be spoofed by using a backslash (`\`) character followed by an at (`@`) character. If the hostname is used in security decisions, the decision may be incorrect. Depending on library usage and attacker intent, impacts may include allow/block list bypasses, SSRF attacks, open redirects, or other undesired behavior. For example the URL `https://expected-example.com\@observed-example.com` will incorrectly return `observed-example.com` if using an affected version. Patched versions correctly return `expected-example.com`. Patched versions match the behavior of other parsers which implement the WHATWG URL specification, including web browsers and Node's built-in URL class. Version 1.19.4 is patched against all known payload variants. Version 1.19.3 has a partial patch but is still vulnerable to a payload variant.]
Remediation
References
https://www.npmjs.com/package/urijs
https://github.com/medialize/URI.js/security/advisories/GHSA-3329-pjwv-fjpg
https://github.com/medialize/URI.js/releases/tag/v1.19.4
https://github.com/medialize/URI.js/commit/b02bf037c99ac9316b77ff8bfd840e90becf1155
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