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Timing Attack Affecting ecdsa package, versions >=0.0.0

0.0
medium

Snyk CVSS

    Attack Complexity High
    Integrity High

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  • Snyk ID SNYK-RUBY-ECDSA-512290
  • published 13 Nov 2019
  • disclosed 2 Oct 2019
  • credit Centre for Research on Cryptography and Security
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Introduced: 2 Oct 2019

CVE NOT AVAILABLE CWE-362 Open this link in a new tab

How to fix?

There is no fixed version for ecdsa.

Overview

ecdsa is a gem that implements the Ellipctic Curve Digital Signature Algorithm (ECDSA) almost entirely in pure Ruby.

Affected versions of this package are vulnerable to Timing Attack. Practical recovery of the long-term private key generated by the library is possible under certain conditions. Leakage of bit-length of a scalar during scalar multiplication is possible on an elliptic curve which might allow practical recovery of the long-term private key.