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Timing Attack Affecting ecdsa package, versions [,0.14)

0.0
medium

Snyk CVSS

    Attack Complexity High
    Integrity High

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  • Snyk ID SNYK-PYTHON-ECDSA-511942
  • 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?

Upgrade ecdsa to version 0.14 or higher.

Overview

ecdsa is an easy-to-use implementation of ECDSA cryptography (Elliptic Curve Digital Signature Algorithm), implemented purely in Python, released under the MIT license.

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.