Improper Verification of Cryptographic Signature Affecting starkbank-ecdsa package, versions [,2.0.1)


Severity

Recommended
0.0
critical
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.38% (73rd percentile)

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  • Snyk IDSNYK-PYTHON-STARKBANKECDSA-1915561
  • published11 Nov 2021
  • disclosed10 Nov 2021
  • creditUnknown

Introduced: 10 Nov 2021

CVE-2021-43572  (opens in a new tab)
CWE-347  (opens in a new tab)

How to fix?

Upgrade starkbank-ecdsa to version 2.0.1 or higher.

Overview

starkbank-ecdsa is an A lightweight and fast pure python ECDSA library

Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature which fails to check that the signature is non-zero. It allows attackers to forge signatures on arbitrary messages.

CVSS Scores

version 3.1