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Improper Certificate Validation Affecting nss-softokn package, versions <0:3.53.1-6.46.amzn1

medium

Snyk CVSS

    Attack Complexity High
    User Interaction Required
    Scope Changed

    Threat Intelligence

    EPSS 0.61% (79th percentile)
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NVD
5.3 medium
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SUSE
5 medium
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Red Hat
3.4 low

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  • Snyk ID SNYK-AMZN201803-NSSSOFTOKN-1726380
  • published 27 Sep 2021
  • disclosed 23 Jul 2019
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Introduced: 23 Jul 2019

CVE-2019-11727 Open this link in a new tab
CWE-295 Open this link in a new tab

How to fix?

Upgrade Amazon-Linux:2018.03 nss-softokn to version 0:3.53.1-6.46.amzn1 or higher.
This issue was patched in ALAS-2021-1522.

NVD Description

Note: Versions mentioned in the description apply only to the upstream nss-softokn package and not the nss-softokn package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2018.03 relevant fixed versions and status.

A vulnerability exists where it possible to force Network Security Services (NSS) to sign CertificateVerify with PKCS#1 v1.5 signatures when those are the only ones advertised by server in CertificateRequest in TLS 1.3. PKCS#1 v1.5 signatures should not be used for TLS 1.3 messages. This vulnerability affects Firefox < 68.