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Use of a Broken or Risky Cryptographic Algorithm Affecting nss package, versions <2:3.26.2-1.1+deb9u2

0.0
medium

Snyk CVSS

    Attack Complexity High
    User Interaction Required
    Confidentiality High

    Threat Intelligence

    EPSS 0.07% (28th percentile)
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NVD
4.4 medium
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SUSE
4.4 medium
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Red Hat
4.4 medium

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  • Snyk ID SNYK-DEBIAN9-NSS-572789
  • published 19 Jun 2020
  • disclosed 9 Jul 2020
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Introduced: 19 Jun 2020

CVE-2020-12402 Open this link in a new tab
CWE-327 Open this link in a new tab

How to fix?

Upgrade Debian:9 nss to version 2:3.26.2-1.1+deb9u2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream nss package and not the nss package as distributed by Debian. See How to fix? for Debian:9 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.

References