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CVE
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CVE-2020-13822Date: (C)2020-06-04   (M)2023-12-22


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

CVSS Score and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:CVSS V2 Severity:
CVSS Score : 7.7CVSS Score : 6.8
Exploit Score: 2.2Exploit Score: 8.6
Impact Score: 5.5Impact Score: 6.4
 
CVSS V3 Metrics:CVSS V2 Metrics:
Attack Vector: NETWORKAccess Vector: NETWORK
Attack Complexity: HIGHAccess Complexity: MEDIUM
Privileges Required: NONEAuthentication: NONE
User Interaction: NONEConfidentiality: PARTIAL
Scope: UNCHANGEDIntegrity: PARTIAL
Confidentiality: HIGHAvailability: PARTIAL
Integrity: HIGH 
Availability: LOW 
  
Reference:
https://github.com/indutny/elliptic/issues/226
https://medium.com/%40herman_10687/malleability-attack-why-it-matters-7b5f59fb99a4
https://www.npmjs.com/package/elliptic
https://yondon.blog/2019/01/01/how-not-to-use-ecdsa/

CWE    1
CWE-190

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