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GHSA-j3jw-j2j8-2wv9

Improper Verification of Cryptographic Signature in starkbank-ecdsa

Source: GitHub Advisory Database (reviewed) Critical CVE-2021-43569

Packages

EcosystemPackageAffectedFixed in
NuGet starkbank-ecdsa < 1.3.2 1.3.2

Details

As written in the advisory (Markdown source, shown as plain text).

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

External links from the advisory. They lead to third-party sites.