http-signature is a reference implementation of Joyent's HTTP Signature scheme.
Affected versions of the package are vulnerable to Timing Attacks due to time-variable comparison of signatures.
The library implemented a character to character comparison, similar to 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 signature are incorrect.
An attacker can use this difference to perform a timing attack, essentially allowing them to guess the signature one character at a time.
You can read more about timing attacks in Node.js on the Snyk blog.
http-signature to version 1.0.0 or higher.
Snyk patch available for versions:
- Alok Menghrajani
- Snyk ID
- 21 Jan, 2015
- 28 Jun, 2017