9.4 High
AI Score
Confidence
High
0.003 Low
EPSS
Percentile
68.8%
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.
github.com/starkbank/ecdsa-dotnet/releases/tag/v1.3.2
research.nccgroup.com/2021/11/08/technical-advisory-arbitrary-signature-forgery-in-stark-bank-ecdsa-libraries/