CVEvulnerability
CVE-2020-12402
4.4 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2020-07-09
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 4.4 MEDIUM — CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N
- CVSS 2.0 ([email protected])
- 1.2 LOW — AV:L/AC:H/Au:N/C:P/I:N/A:N
- Weaknesses
- CWE-203
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.
Affected configurations
• mozilla firefox (< 78.0)
• fedoraproject fedora 32
• opensuse leap 15.1
• opensuse leap 15.2
• debian debian linux 9.0
Related
Weakness · CWE (1)
- CWE-203 Observable Discrepancy weakness
References
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00016.html Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00018.html Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.html Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.html Third Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1631597 Issue Tracking, Permissions Required, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2020/09/msg00029.html Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RFL6UNFK4MG2WDXLMLFAEIUSM5EUK7CG/ lists.fedoraproject.org
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UWVDJRARXNWWWTCGMM63EXLQHH2LNOXO/ lists.fedoraproject.org
- https://security.gentoo.org/glsa/202007-10 Third Party Advisory
- https://usn.ubuntu.com/4417-1/ Third Party Advisory
- https://usn.ubuntu.com/4417-2/ Third Party Advisory
- https://www.debian.org/security/2020/dsa-4726 Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-24/ Vendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00016.html Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00018.html Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.html Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.html Third Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1631597 Issue Tracking, Permissions Required, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2020/09/msg00029.html Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RFL6UNFK4MG2WDXLMLFAEIUSM5EUK7CG/ lists.fedoraproject.org
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UWVDJRARXNWWWTCGMM63EXLQHH2LNOXO/ lists.fedoraproject.org
- https://security.gentoo.org/glsa/202007-10 Third Party Advisory
- https://usn.ubuntu.com/4417-1/ Third Party Advisory
- https://usn.ubuntu.com/4417-2/ Third Party Advisory
- https://www.debian.org/security/2020/dsa-4726 Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-24/ Vendor Advisory