Homepage
About Snyk

Improper Verification of Cryptographic Signature Affecting starkbank-ecdsa package, versions [,1.3.2)

0.0
high

Snyk CVSS

    Attack Complexity Low
    Availability High

    Threat Intelligence

    EPSS 0.23% (62nd percentile)
Expand this section
NVD
9.8 critical

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk ID SNYK-DOTNET-STARKBANKECDSA-1915558
  • published 11 Nov 2021
  • disclosed 10 Nov 2021
  • credit Unknown
Report a new vulnerability Found a mistake?

Introduced: 10 Nov 2021

CVE-2021-43569 Open this link in a new tab
CWE-347 Open this link in a new tab

How to fix?

Upgrade starkbank-ecdsa to version 1.3.2 or higher.

Overview

starkbank-ecdsa is a C# implementation of the Elliptic Curve Digital Signature Algorithm (ECDSA) by Stark Bank.

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

References