Use of a Broken or Risky Cryptographic Algorithm Affecting nss-sysinit package, versions <0:3.53.1-11.el8_2


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.07% (31st percentile)

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  • Snyk IDSNYK-RHEL8-NSSSYSINIT-3793542
  • published26 Jul 2021
  • disclosed2 Jun 2020

Introduced: 2 Jun 2020

CVE-2020-12402  (opens in a new tab)
CWE-327  (opens in a new tab)

How to fix?

Upgrade RHEL:8 nss-sysinit to version 0:3.53.1-11.el8_2 or higher.
This issue was patched in RHSA-2020:3280.

NVD Description

Note: Versions mentioned in the description apply only to the upstream nss-sysinit package and not the nss-sysinit package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

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.

CVSS Scores

version 3.1