Improper Verification of Cryptographic Signature in starkbank-ecdsa

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

Em resumo

CVE-2021-43569 é uma vulnerabilidade CRÍTICO (CVSS 9.8) que afeta starkbank-ecdsa, ecdsa-dotnet (starkbank).
Chance de exploração nos próximos 30 dias (EPSS): 1.1%, maior que 64.6% das vulnerabilidades.
Correção: atualize para 1.3.2 ou posterior.

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

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