Improper Verification of Cryptographic Signature in starkbank-ecdsa

CRITIQUE 9.8CVE-2021-43569 · GHSA-j3jw-j2j8-2wv9 · Published 09/11/2021 · updated 17/06/2026

En bref

CVE-2021-43569 est une vulnérabilité CRITIQUE (CVSS 9.8) touchant starkbank-ecdsa, ecdsa-dotnet (starkbank).
Probabilité d'exploitation dans les 30 prochains jours (EPSS) : 1.1%, plus élevée que 64.6% des vulnérabilités.
Correctif : mettre à jour vers 1.3.2 ou plus récent.

Package	Affected versions	Patched versions
starkbank-ecdsa NuGet	`< 1.3.2`	`1.3.2`
ecdsa-dotnet starkbank	`= 1.3.2`	No fix yet

Description

The verify function in the Stark Bank .NET ECDSA library (ecdsa-dotnet) 1.3.1 fails to check that the signature is non-zero, which allows attackers to forge signatures on arbitrary messages.

NVD description

The verify function in the Stark Bank .NET ECDSA library (ecdsa-dotnet) 1.3.1 fails to check that the signature is non-zero, which allows attackers to forge signatures on arbitrary messages.

References

Autres vulnérabilités de starkbank-ecdsa

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Package

Affected versions

Patched versions

starkbank-ecdsa

NuGet

< 1.3.2

1.3.2

ecdsa-dotnet

starkbank

= 1.3.2

No fix yet

Description

The verify function in the Stark Bank .NET ECDSA library (ecdsa-dotnet) 1.3.1 fails to check that the signature is non-zero, which allows attackers to forge signatures on arbitrary messages.

NVD description

The verify function in the Stark Bank .NET ECDSA library (ecdsa-dotnet) 1.3.1 fails to check that the signature is non-zero, which allows attackers to forge signatures on arbitrary messages.