{"id":"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":"2026-05-18T05:50:13.746525782Z","published":"2020-01-23T17:15:11.893Z","database_specific":{"unresolved_ranges":[{"cpes":["cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*"],"vendor_product":"debian:debian_linux","source":"CPE_FIELD","extracted_events":[{"last_affected":"10.0"}]},{"vendor_product":"fedoraproject:fedora","cpes":["cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*","cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*"],"source":"CPE_FIELD","extracted_events":[{"last_affected":"30"},{"last_affected":"31"}]}]},"references":[{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html"},{"type":"ADVISORY","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A3GWQNONS7GRORXZJ7MOJFUEJ2ZJ4OUW/"},{"type":"ADVISORY","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NGDACU65MYZXXVPQP2EBHUJGOR4RWLVY/"},{"type":"ADVISORY","url":"https://tls.mbed.org/tech-updates/security-advisories"},{"type":"ADVISORY","url":"https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2019-12"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/armmbed/mbed-crypto","events":[{"introduced":"0"},{"fixed":"a337167543d930f4ea2fa26778881fa3a6b47d74"}],"database_specific":{"source":"CPE_FIELD","cpe":"cpe:2.3:a:arm:mbed_crypto:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"3.0.0"}]}}],"versions":["mbedcrypto-2.0.0d2","mbedcrypto-2.0.0","mbedcrypto-3.0.0d0","mbedcrypto-2.1.0d0","mbedcrypto-1.1.1","mbedcrypto-1.1.0d2","mbedcrypto-1.1.0","mbedcrypto-1.1.0d1","mbedcrypto-1.1.0d0","mbedcrypto-1.0.0d7","mbedcrypto-1.0.0","mbedcrypto-1.0.0d6","mbedcrypto-1.0.0d5","mbedcrypto-1.0.0d4","mbedcrypto-1.0.0d3","mbedcrypto-1.0.0d2","mbedcrypto-1.0.0d1","mbedcrypto-1.0.0d0","mbedcrypto-0.1.0b2","mbedcrypto-0.1.0b"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2019-18222.json"}},{"ranges":[{"type":"GIT","repo":"https://github.com/mbed-tls/mbedtls","events":[{"introduced":"0"},{"fixed":"d8180f8d84123704d04bb9d6fea7b36facdf7f00"},{"introduced":"8be0e6db41b4a085e90cb03983f99d3a5158d450"},{"fixed":"39e2c0eeb6501980764793e8d54c49c0a42bde48"},{"introduced":"3f8d78411a26e833db18d9fbde0e2f0baeda87f0"},{"fixed":"dbcb44202c9b67184a72afd21c7191c17eee352e"}],"database_specific":{"source":"CPE_FIELD","cpe":"cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"2.7.13"},{"introduced":"2.8.0"},{"fixed":"2.16.4"},{"introduced":"2.17.0"},{"fixed":"2.20.0"}]}}],"versions":["mbedtls-2.19.1","mbedtls-2.20.0d0","mbedtls-2.16.3","mbedtls-2.7.12","mbedtls-2.19.0d2","mbedtls-2.19.0","mbedtls-2.19.0d1","mbedtls-2.16.2","mbedtls-2.7.11","mbedtls-2.7.9","mbedtls-2.16.0","mbedtls-2.14.0","mbedtls-2.7.8","mbedtls-2.7.7","mbedtls-2.13.1","mbedtls-2.13.0","mbedtls-2.7.6","mbedtls-2.12.0","mbedtls-2.7.5","mbedtls-2.11.0","mbedtls-2.7.4","mbedtls-2.10.0","mbedtls-2.7.0","mbedtls-2.7.3","mbedtls-2.9.0","mbedtls-2.7.2","mbedtls-2.8.0","mbedtls-2.7.2-rc1","mbedtls-2.7.1","mbedtls-2.7.0-rc1","mbedtls-2.6.0","mbedtls-2.6.0-rc1","mbedtls-2.5.1","mbedtls-2.5.0","mbedtls-2.4.0","mbedtls-2.2.1","yotta-2.3.1","mbedtls-2.3.0","mbedtls-2.2.0","mbedos-release-15-11","mbedos-techcon-oob2","mbedtls-2.1.2","mbedtls-2.1.0","mbedtls-2.1.1","beta-oob-2","mbedtls-2.0.0","polarssl-1.3.9","polarssl-1.3.8","polarssl-1.3.7","polarssl-1.3.6","polarssl-1.3.5","polarssl-1.3.4","polarssl-1.3.3","polarssl-1.3.2","polarssl-1.3.1","polarssl-1.3.0","polarssl-1.3.0-rc0","polarssl-1.2.6","polarssl-1.2.5","polarssl-1.2.4","polarssl-1.2.2","polarssl-1.2.1","polarssl-1.2.0"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2019-18222.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N"}]}