VulnerabilityModified
CVE-2020-13822
The Elliptic package 6.5.2 for Node.js allows ECDSA signature malleability via variations in encoding, leading '\0' bytes, or integer overflows.
HIGH 7.7EPSS 2.63%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.63%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.1
- 7.7 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
- EPSS
- 2.63% probability · 85th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-190
- Affected
- indutny/elliptic
- Source
- cve@mitre.org
References
- https://github.com/indutny/elliptic/issues/226Exploit, Third Party Advisory
- https://medium.com/%40herman_10687/malleability-attack-why-it-matters-7b5f59fb99a4
- https://www.npmjs.com/package/ellipticThird Party Advisory
- https://yondon.blog/2019/01/01/how-not-to-use-ecdsa/Third Party Advisory
- https://github.com/indutny/elliptic/issues/226Exploit, Third Party Advisory
- https://medium.com/%40herman_10687/malleability-attack-why-it-matters-7b5f59fb99a4
- https://www.npmjs.com/package/ellipticThird Party Advisory
- https://yondon.blog/2019/01/01/how-not-to-use-ecdsa/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.