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Improper Verification of Cryptographic Signature Affecting starkbank-ecdsa Open this link in a new tab package, versions [,1.3.2)

0.0
high

  • Attack Complexity

    Low

  • Availability

    High

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  • snyk-id

    SNYK-DOTNET-STARKBANKECDSA-1915558

  • published

    11 Nov 2021

  • disclosed

    10 Nov 2021

  • credit

    Unknown

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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