CVE-2020-12607
7.5 · HIGHOverview
CVE-2020-12607 is a high-severity vulnerability affecting antonkueltz fastecdsa. It was published on June 2, 2020 and has a CVSS 3.1 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
An issue was discovered in fastecdsa before 2.1.2. When using the NIST P-256 curve in the ECDSA implementation, the point at infinity is mishandled. This means that for an extreme value in k and s^-1, the signature verification fails even if the signature is correct. This behavior is not solely a usability problem. There are some threat models where an attacker can benefit by successfully guessing users for whom signature verification will fail.
Remediation
Check the references section for vendor advisories and patches from antonkueltz. Update fastecdsa to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| antonkueltz | fastecdsa | >= 0, < 2.1.2 | Affected |
References
Frequently Asked Questions
What is CVE-2020-12607?
CVE-2020-12607 is a high-severity vulnerability affecting antonkueltz fastecdsa. It was published on June 2, 2020 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2020-12607?
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2020-12607?
Check the references section for vendor advisories and patches from antonkueltz. Update fastecdsa to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2020-12607?
CyberStrike's AI-powered security agents can automatically detect CVE-2020-12607 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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