CVSS 3.1
9.8 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCVE-2021-43571
Critical (9.8) in starkbank ecdsa-node. EPSS 1.0% chance of exploitation in the next 30 days. Fixed in starkbank-ecdsa 1.1.3.
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.
Severity
- EPSS
- 1.0% chance of exploitation in the next 30 days; higher than 63% of CVEs (scores of 2026-10-31)
- CWE
- CWE-347
- Published
- Modified
- Record from
- the NVD, synced
Affected
- starkbank:ecdsa-node
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-q9q6-f556-gpm7 | npm | starkbank-ecdsa | <1.1.3 | 1.1.3 |
References
- https://github.com/starkbank/ecdsa-node/releases/tag/v1.1.3
- https://research.nccgroup.com/2021/11/08/technical-advisory-arbitrary-signature-forgery-in-stark-bank-ecdsa-libraries/
- https://github.com/starkbank/ecdsa-node/releases/tag/v1.1.3
- https://research.nccgroup.com/2021/11/08/technical-advisory-arbitrary-signature-forgery-in-stark-bank-ecdsa-libraries/