CVE-2020-12402

CVE Details

Release Date:	2020-07-09
Impact:	None	What is this?

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.

See more information about CVE-2020-12402 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 metrics

Base Score:	4.4
Vector String:	CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N
Version:	3.0
Attack Vector:	Local
Attack Complexity:	High
Privileges Required:	Low
User Interaction:	Required
Scope:	Unchanged
Confidentiality Impact:	High
Integrity Impact:	None
Availability Impact:	None

Errata information

Platform	Errata	Release Date
Oracle Linux version 7 (nspr)	ELSA-2020-4076	2020-10-08
Oracle Linux version 7 (nss)	ELSA-2020-4076	2020-10-08
Oracle Linux version 7 (nss-softokn)	ELSA-2020-4076	2020-10-08
Oracle Linux version 7 (nss-util)	ELSA-2020-4076	2020-10-08
Oracle Linux version 8 (nspr)	ELSA-2020-3280	2020-08-04
Oracle Linux version 8 (nss)	ELSA-2020-3280	2020-08-04