Vulnerability CVE-2020-12402: Information

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.

Severity: MEDIUM (4.4) Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N

Fixed packages

References to Advisories, Solutions, and Tools

1. Affected configurations:

   1. Configuration 1

      cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*

      End excliding

      78.0

      ---

      Configuration 2

      cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*

      ---

      cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*

      ---

      cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*

      ---

      Configuration 3

      cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

      ---