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csrf-lite@0.0.1 vulnerabilities

csrf protection for framework-less node sites

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Direct Vulnerabilities

Known vulnerabilities in the csrf-lite package. This does not include vulnerabilities belonging to this package’s dependencies.

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Vulnerability Vulnerable Version
  • M
Non-Constant Time String Comparison

csrf-lite is a CSRF protection utility for framework-free node sites. Affected versions of the package are vulnerable to a timing attack.

While the CSRF protection itself works well and increases security, the library uses the built-in string comparison mechanism, ===, and not a time constant string comparison. As a result, the comparison will fail faster when the first characters in the token are incorrect. An attacker can use this difference to perform a timing attack, essentially allowing them to guess the CSRF token one character at a time.

You can read more about timing attacks in Node.js on the Snyk blog: https://snyk.io/blog/node-js-timing-attack-ccc-ctf/

How to fix Non-Constant Time String Comparison?

Update to version 0.1.2 or higher.

<=0.1.1
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