CVE-2020-12402
Mozilla Firefox
MEDIUM 4.4
At a glance
- Source
- NVD
- EPSS
- EPSS 0.34 % · percentile 27 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- mozilla
- NVD status
- Modified
Description
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.
Weaknesses (CWE)
- CWE-203 — Observable Discrepancy
References
- https://www.mozilla.org/security/advisories/mfsa2020-24/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1631597
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00016.html
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00018.html
- https://usn.ubuntu.com/4417-1/
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.html
- https://www.debian.org/security/2020/dsa-4726
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UWVDJRARXNWWWTCGMM63EXLQHH2LNOXO/
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.html
- https://security.gentoo.org/glsa/202007-10
- https://usn.ubuntu.com/4417-2/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RFL6UNFK4MG2WDXLMLFAEIUSM5EUK7CG/
- https://lists.debian.org/debian-lts-announce/2020/09/msg00029.html
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 4.4 | CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | LOW 1.2 | AV:L/AC:H/Au:N/C:P/I:N/A:N | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2020-4714
- GCVE · GCVE-0-2020-12402
CERT-FR advisories
- CERTFR-2024-AVI-0575 — Multiples vulnérabilités dans les produits Juniper Networks · cert.ssi.gouv.fr
- CERTFR-2022-AVI-267 — Multiples vulnérabilités dans Juniper Networks Junos Space · cert.ssi.gouv.fr
- CERTFR-2020-AVI-448 — Multiples vulnérabilités dans Mozilla Foundation Thunderbird · cert.ssi.gouv.fr
- CERTFR-2020-AVI-405 — Multiples vulnérabilités dans Mozilla Firefox · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*< 78.0cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Mozilla · Firefox | affected unspecified < 78 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |