CVE-2021-43572

Published November 9th, 2021

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CVSS v3

9.8

CRITICAL

CVSS v2

7.5

HIGH

Affected

PROJECT

Description

The verify function in the Stark Bank Python ECDSA library (aka starkbank-escada or ecdsa-python) before 2.0.1 fails to check that the signature is non-zero, which allows attackers to forge signatures on arbitrary messages.

starkbank/ecdsa-python

A lightweight and fast pure Python ECDSA library

GitHub

141