CVE-2020-12402
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2020-12402
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-12402.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2020-12402
- Downstream
- Related
- Published
- 2020-07-09T15:15:10Z
- Modified
- 2025-08-09T19:01:27Z
- Severity
-
- 4.4 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N CVSS Calculator
- Summary
- [none]
- 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 < 78.
- References
-
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00016.html
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00018.html
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.html
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.html
- https://bugzilla.mozilla.org/show_bug.cgi?id=1631597
- https://lists.debian.org/debian-lts-announce/2020/09/msg00029.html
- https://security.gentoo.org/glsa/202007-10
- https://usn.ubuntu.com/4417-1/
- https://usn.ubuntu.com/4417-2/
- https://www.debian.org/security/2020/dsa-4726
- https://www.mozilla.org/security/advisories/mfsa2020-24/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RFL6UNFK4MG2WDXLMLFAEIUSM5EUK7CG/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UWVDJRARXNWWWTCGMM63EXLQHH2LNOXO/