CVE-2021-43570
CRITICALCVSS 9.8/10EPSS 0.99%
Last modified
CVE-2021-43570 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. The verify function in the Stark Bank Java ECDSA library (ecdsa-java) 1.0.0 fails to check that the signature is non-zero, which allows attackers to forge signatures on arbitrary messages.. EPSS estimates a 0.99% chance of exploitation in the next 30 days.
Description
The verify function in the Stark Bank Java ECDSA library (ecdsa-java) 1.0.0 fails to check that the signature is non-zero, which allows attackers to forge signatures on arbitrary messages.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Starkbank | Ecdsa-Java | 1.0.0 |
References
- https://github.com/starkbank/ecdsa-java/releases/tag/v1.0.1Third Party Advisory
- https://github.com/starkbank/ecdsa-java/releases/tag/v1.0.1Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-43570?
The verify function in the Stark Bank Java ECDSA library (ecdsa-java) 1.0.0 fails to check that the signature is non-zero, which allows attackers to forge signatures on arbitrary messages.
How severe is CVE-2021-43570?
CVE-2021-43570 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.99% probability of exploitation in the next 30 days.
How do I fix CVE-2021-43570?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2021-43570?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST