CVE-2020-12607

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.
Configurations

Configuration 1 (hide)

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

History

12 Feb 2025, 18:29

Type Values Removed Values Added
First Time Antonkueltz fastecdsa
Antonkueltz
CPE cpe:2.3:a:fastecdsa_project:fastecdsa:*:*:*:*:*:*:*:* cpe:2.3:a:antonkueltz:fastecdsa:*:*:*:*:*:*:*:*

21 Nov 2024, 04:59

Type Values Removed Values Added
References () https://github.com/AntonKueltz/fastecdsa/commit/4a16daeaf139be20654ef58a9fe4c79dc030458c - Issue Tracking, Patch, Third Party Advisory () https://github.com/AntonKueltz/fastecdsa/commit/4a16daeaf139be20654ef58a9fe4c79dc030458c - Issue Tracking, Patch, Third Party Advisory
References () https://github.com/AntonKueltz/fastecdsa/commit/7b64e3efaa806b4daaf73bb5172af3581812f8de - Patch, Third Party Advisory () https://github.com/AntonKueltz/fastecdsa/commit/7b64e3efaa806b4daaf73bb5172af3581812f8de - Patch, Third Party Advisory
References () https://github.com/AntonKueltz/fastecdsa/commit/e592f106edd5acf6dacedfab2ad16fe6c735c9d1 - Patch, Third Party Advisory () https://github.com/AntonKueltz/fastecdsa/commit/e592f106edd5acf6dacedfab2ad16fe6c735c9d1 - Patch, Third Party Advisory
References () https://github.com/AntonKueltz/fastecdsa/issues/52 - Exploit, Third Party Advisory () https://github.com/AntonKueltz/fastecdsa/issues/52 - Exploit, Third Party Advisory

Information

Published : 2020-06-02 21:15

Updated : 2025-02-12 18:29


NVD link : CVE-2020-12607

Mitre link : CVE-2020-12607

CVE.ORG link : CVE-2020-12607


JSON object : View

Products Affected

antonkueltz

  • fastecdsa
CWE
CWE-347

Improper Verification of Cryptographic Signature