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prionPRIOn knowledge basePRION:CVE-2020-12402
HistoryJul 09, 2020 - 3:15 p.m.

Design/Logic Flaw

2020-07-0915:15:00
PRIOn knowledge base
www.prio-n.com
6

5.7 Medium

AI Score

Confidence

Low

0.001 Low

EPSS

Percentile

29.0%

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.