CVE-2020-12607 - Vulnerability Details - OpenCVE

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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact Partial

Integrity Impact None

Availability Impact None

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Vendors	Products
Antonkueltz	Fastecdsa

Configuration 1 [-]

cpe:2.3:a:antonkueltz:fastecdsa:*:*:*:*:*:*:*:*

No data.

References

Link	Providers
https://github.com/AntonKueltz/fastecdsa/commit/4a16daeaf139be20654ef58a9fe4c79dc030458c
https://github.com/AntonKueltz/fastecdsa/commit/7b64e3efaa806b4daaf73bb5172af3581812f8de
https://github.com/AntonKueltz/fastecdsa/commit/e592f106edd5acf6dacedfab2ad16fe6c735c9d1
https://github.com/AntonKueltz/fastecdsa/issues/52

History

Wed, 12 Feb 2025 18:45:00 +0000

Type	Values Removed	Values Added
First Time appeared		Antonkueltz Antonkueltz fastecdsa
CPEs	cpe:2.3:a:fastecdsa_project:fastecdsa::::::::	cpe:2.3:a:antonkueltz:fastecdsa::::::::
Vendors & Products	Fastecdsa Project Fastecdsa Project fastecdsa	Antonkueltz Antonkueltz fastecdsa

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2020-06-02T21:00:52

Updated: 2024-08-04T12:04:21.646Z

Reserved: 2020-05-01T00:00:00

Link: CVE-2020-12607

Vulnrichment

No data.

NVD

Status : Modified

Published: 2020-06-02T21:15:10.607

Modified: 2025-02-12T18:29:08.047

Link: CVE-2020-12607

Redhat

No data.

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