{"id":"UBUNTU-CVE-2020-13822","details":"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.","modified":"2025-10-24T04:48:31Z","published":"2020-06-04T15:15:00Z","upstream":["CVE-2020-13822"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-13822"},{"type":"REPORT","url":"https://github.com/indutny/elliptic/issues/226"},{"type":"REPORT","url":"https://medium.com/@herman_10687/malleability-attack-why-it-matters-7b5f59fb99a4"},{"type":"REPORT","url":"https://www.npmjs.com/package/elliptic"},{"type":"REPORT","url":"https://yondon.blog/2019/01/01/how-not-to-use-ecdsa/"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-13822"}],"affected":[{"package":{"name":"node-elliptic","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/node-elliptic@6.4.0+dfsg-1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.4.0+dfsg-1"],"ecosystem_specific":{"binaries":[{"binary_name":"node-elliptic","binary_version":"6.4.0+dfsg-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-13822.json"}},{"package":{"name":"node-elliptic","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/node-elliptic@6.5.1~dfsg-2?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.5.1~dfsg-1","6.5.1~dfsg-2"],"ecosystem_specific":{"binaries":[{"binary_name":"node-elliptic","binary_version":"6.5.1~dfsg-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-13822.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L"},{"type":"Ubuntu","score":"medium"}]}