CVE-2021-43569
Critical
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.
SeverityCritical
CVSS9.8
Exploit probability—
ProductStarkbank Ecdsa-dotnet
PublishedNov 9, 2021
First seenNov 9, 2021
How to fix
Update
- starkbank-ecdsa1.3.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| starkbank ecdsa-dotnet | 1.3.2 | — |
| starkbank-ecdsaNuGet | v < 1.3.2 | 1.3.2 |
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