Vulnerability CVE-2020-13822


Published: 2020-06-04

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.

Type:

CWE-190

(Integer Overflow or Wraparound)

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.5/10
6.4/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Elliptic project -> Elliptic 

 References:
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/

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