Timing Attack Affecting fastecdsa package, versions [0, 2.1.4)
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Test your applications- Snyk ID SNYK-PYTHON-FASTECDSA-511943
- published 13 Nov 2019
- disclosed 2 Oct 2019
- credit Centre for Research on Cryptography and Security
How to fix?
Upgrade fastecdsa to version 2.1.4 or higher.
Overview
fastecdsa is a python package for doing fast elliptic curve cryptography, specifically digital signatures.
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.
CVSS Scores
version 3.1