Improper Verification of Cryptographic Signature in starkbank-ecdsa

CRITIQUE 9.8CVE-2021-43571 · GHSA-q9q6-f556-gpm7 · Published 09/11/2021 · updated 17/06/2026

En bref

CVE-2021-43571 est une vulnérabilité CRITIQUE (CVSS 9.8) touchant ecdsa-node (starkbank), starkbank-ecdsa.
Probabilité d'exploitation dans les 30 prochains jours (EPSS) : 1.0%, plus élevée que 63.7% des vulnérabilités.
Correctif : mettre à jour vers 1.1.3 ou plus récent.

Package	Affected versions	Patched versions
ecdsa-node starkbank	`= 1.1.2`	No fix yet
starkbank-ecdsa npm	`< 1.1.3`	`1.1.3`

Description

The verify function in the Stark Bank Node.js ECDSA library (ecdsa-node) 1.1.2 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 Node.js ECDSA library (ecdsa-node) 1.1.2 fails to check that the signature is non-zero, which allows attackers to forge signatures on arbitrary messages.

References

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