CVE-2020-13822 Information

Description

The Elliptic package 6.5.2 for Node.js allows ECDSA signature malleability via variations in encoding leading ‘\0’ bytes or integer overflows. This could conceivably have a security-relevant impact if an application relied on a single canonical signature.

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L

Reference

https://github.com/indutny/elliptic/issues/226 https://medium.com/@herman_10687/malleability-attack-why-it-matters-7b5f59fb99a4 https://www.npmjs.com/package/elliptic https://yondon.blog/2019/01/01/how-not-to-use-ecdsa/

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

LOW

Base Severity

7.7