CVE-2020-13822: Signature Malleabillity in elliptic
(updated )
The Elliptic package before version 6.5.3 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.
References
- github.com/advisories/GHSA-vh7m-p724-62c2
- github.com/indutny/elliptic
- github.com/indutny/elliptic/commit/856fe4d99fe7b6200556e6400b3bf585b1721bec
- github.com/indutny/elliptic/issues/226
- medium.com/%40herman_10687/malleability-attack-why-it-matters-7b5f59fb99a4
- medium.com/@herman_10687/malleability-attack-why-it-matters-7b5f59fb99a4
- nvd.nist.gov/vuln/detail/CVE-2020-13822
- www.npmjs.com/package/elliptic
- yondon.blog/2019/01/01/how-not-to-use-ecdsa
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