{"id":"ALPINE-CVE-2019-18222","details":"The ECDSA signature implementation in ecdsa.c in Arm Mbed Crypto 2.1 and Mbed TLS through 2.19.1 does not reduce the blinded scalar before computing the inverse, which allows a local attacker to recover the private key via side-channel attacks.","modified":"2026-03-09T01:14:31.679787Z","published":"2020-01-23T17:15:11.893Z","upstream":["CVE-2019-18222"],"references":[{"type":"ADVISORY","url":"https://security.alpinelinux.org/vuln/CVE-2019-18222"}],"affected":[{"package":{"name":"mbedtls","ecosystem":"Alpine:v3.10","purl":"pkg:apk/alpine/mbedtls?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.16.4-r0"}]}],"versions":["2.0.0-r0","2.1.2-r0","2.11.0-r0","2.12.0-r0","2.14.1-r0","2.16.0-r0","2.16.1-r0","2.16.1-r1","2.2.0-r0","2.2.0-r1","2.2.1-r0","2.3.0-r0","2.4.0-r0","2.4.1-r0","2.4.2-r0","2.5.1-r0","2.6.0-r0","2.6.1-r0","2.7.0-r0"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2019-18222.json"}},{"package":{"name":"mbedtls","ecosystem":"Alpine:v3.11","purl":"pkg:apk/alpine/mbedtls?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.16.4-r0"}]}],"versions":["2.0.0-r0","2.1.2-r0","2.11.0-r0","2.12.0-r0","2.14.1-r0","2.16.0-r0","2.16.1-r0","2.16.1-r1","2.16.2-r0","2.16.3-r0","2.2.0-r0","2.2.0-r1","2.2.1-r0","2.3.0-r0","2.4.0-r0","2.4.1-r0","2.4.2-r0","2.5.1-r0","2.6.0-r0","2.6.1-r0","2.7.0-r0"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2019-18222.json"}},{"package":{"name":"mbedtls","ecosystem":"Alpine:v3.12","purl":"pkg:apk/alpine/mbedtls?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.16.4-r0"}]}],"versions":["2.0.0-r0","2.1.2-r0","2.11.0-r0","2.12.0-r0","2.14.1-r0","2.16.0-r0","2.16.1-r0","2.16.1-r1","2.16.2-r0","2.16.3-r0","2.2.0-r0","2.2.0-r1","2.2.1-r0","2.3.0-r0","2.4.0-r0","2.4.1-r0","2.4.2-r0","2.5.1-r0","2.6.0-r0","2.6.1-r0","2.7.0-r0"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2019-18222.json"}},{"package":{"name":"mbedtls","ecosystem":"Alpine:v3.13","purl":"pkg:apk/alpine/mbedtls?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.16.4-r0"}]}],"versions":["2.0.0-r0","2.1.2-r0","2.11.0-r0","2.12.0-r0","2.14.1-r0","2.16.0-r0","2.16.1-r0","2.16.1-r1","2.16.2-r0","2.16.3-r0","2.2.0-r0","2.2.0-r1","2.2.1-r0","2.3.0-r0","2.4.0-r0","2.4.1-r0","2.4.2-r0","2.5.1-r0","2.6.0-r0","2.6.1-r0","2.7.0-r0"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2019-18222.json"}},{"package":{"name":"mbedtls","ecosystem":"Alpine:v3.14","purl":"pkg:apk/alpine/mbedtls?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.16.4-r0"}]}],"versions":["2.0.0-r0","2.1.2-r0","2.11.0-r0","2.12.0-r0","2.14.1-r0","2.16.0-r0","2.16.1-r0","2.16.1-r1","2.16.2-r0","2.16.3-r0","2.2.0-r0","2.2.0-r1","2.2.1-r0","2.3.0-r0","2.4.0-r0","2.4.1-r0","2.4.2-r0","2.5.1-r0","2.6.0-r0","2.6.1-r0","2.7.0-r0"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2019-18222.json"}},{"package":{"name":"mbedtls","ecosystem":"Alpine:v3.15","purl":"pkg:apk/alpine/mbedtls?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.16.4-r0"}]}],"versions":["2.0.0-r0","2.1.2-r0","2.11.0-r0","2.12.0-r0","2.14.1-r0","2.16.0-r0","2.16.1-r0","2.16.1-r1","2.16.2-r0","2.16.3-r0","2.2.0-r0","2.2.0-r1","2.2.1-r0","2.3.0-r0","2.4.0-r0","2.4.1-r0","2.4.2-r0","2.5.1-r0","2.6.0-r0","2.6.1-r0","2.7.0-r0"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2019-18222.json"}},{"package":{"name":"mbedtls","ecosystem":"Alpine:v3.16","purl":"pkg:apk/alpine/mbedtls?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.16.4-r0"}]}],"versions":["2.0.0-r0","2.1.2-r0","2.11.0-r0","2.12.0-r0","2.14.1-r0","2.16.0-r0","2.16.1-r0","2.16.1-r1","2.16.2-r0","2.16.3-r0","2.2.0-r0","2.2.0-r1","2.2.1-r0","2.3.0-r0","2.4.0-r0","2.4.1-r0","2.4.2-r0","2.5.1-r0","2.6.0-r0","2.6.1-r0","2.7.0-r0"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2019-18222.json"}},{"package":{"name":"mbedtls","ecosystem":"Alpine:v3.17","purl":"pkg:apk/alpine/mbedtls?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.16.4-r0"}]}],"versions":["2.0.0-r0","2.1.2-r0","2.11.0-r0","2.12.0-r0","2.14.1-r0","2.16.0-r0","2.16.1-r0","2.16.1-r1","2.16.2-r0","2.16.3-r0","2.2.0-r0","2.2.0-r1","2.2.1-r0","2.3.0-r0","2.4.0-r0","2.4.1-r0","2.4.2-r0","2.5.1-r0","2.6.0-r0","2.6.1-r0","2.7.0-r0"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2019-18222.json"}},{"package":{"name":"mbedtls","ecosystem":"Alpine:v3.18","purl":"pkg:apk/alpine/mbedtls?arch=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