{"id":"CVE-2020-12402","details":"During RSA key generation, bignum implementations used a variation of the Binary Extended Euclidean Algorithm which entailed significantly input-dependent flow. This allowed an attacker able to perform electromagnetic-based side channel attacks to record traces leading to the recovery of the secret primes. *Note:* An unmodified Firefox browser does not generate RSA keys in normal operation and is not affected, but products built on top of it might. This vulnerability affects Firefox \u003c 78.","modified":"2026-03-15T22:33:06.879653Z","published":"2020-07-09T15:15:10.820Z","related":["SUSE-SU-2020:14418-1","SUSE-SU-2020:14421-1","SUSE-SU-2020:1839-1","SUSE-SU-2020:1850-1","SUSE-SU-2020:1898-1","SUSE-SU-2020:1899-1","openSUSE-SU-2020:0953-1","openSUSE-SU-2020:0955-1","openSUSE-SU-2020:0983-1","openSUSE-SU-2020:1017-1","openSUSE-SU-2024:10600-1","openSUSE-SU-2024:11058-1","openSUSE-SU-2024:14572-1"],"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UWVDJRARXNWWWTCGMM63EXLQHH2LNOXO/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RFL6UNFK4MG2WDXLMLFAEIUSM5EUK7CG/"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2020/09/msg00029.html"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/4417-1/"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/4417-2/"},{"type":"ADVISORY","url":"https://www.debian.org/security/2020/dsa-4726"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00016.html"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00018.html"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.html"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202007-10"},{"type":"ADVISORY","url":"https://www.mozilla.org/security/advisories/mfsa2020-24/"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.html"},{"type":"REPORT","url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1631597"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-12402.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"78.0"}]},{"events":[{"introduced":"0"},{"last_affected":"32"}]},{"events":[{"introduced":"0"},{"last_affected":"15.1"}]},{"events":[{"introduced":"0"},{"last_affected":"15.2"}]},{"events":[{"introduced":"0"},{"last_affected":"9.0"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N"}]}