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.
7878Exploitability
AV:LAC:HPR:LUI:RScope
S:UImpact
C:HI:NA:N4.4/CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N