Cryptographic Issues Affecting ecdsa package, versions [,0.13.3)
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Test your applications- Snyk ID SNYK-PYTHON-ECDSA-540493
- published 2 Jan 2020
- disclosed 2 Jan 2020
- credit Unknown
Introduced: 2 Jan 2020
CVE-2019-14859 Open this link in a new tabHow to fix?
Upgrade ecdsa to version 0.13.3 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 Cryptographic Issues. A flaw exists where signatures used by DER encoding are not correctly verified. Without this verification, a malformed signature could be accepted, making the signature malleable. Without proper verification, an attacker could use a malleable signature to create false transactions.