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Use of a Broken or Risky Cryptographic Algorithm Affecting nss package, versions <0:3.19.1-3.el7_1

medium

Snyk CVSS

    Attack Complexity High

    Threat Intelligence

    EPSS 97.41% (100th percentile)
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NVD
3.7 low
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Red Hat
3.7 low
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SUSE
3.7 low

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  • Snyk ID SNYK-CENTOS7-NSS-2050669
  • published 26 Jul 2021
  • disclosed 20 May 2015
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Introduced: 20 May 2015

CVE-2015-4000 Open this link in a new tab
CWE-327 Open this link in a new tab

How to fix?

Upgrade Centos:7 nss to version 0:3.19.1-3.el7_1 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 Centos. See How to fix? for Centos:7 relevant fixed versions and status.

The TLS protocol 1.2 and earlier, when a DHE_EXPORT ciphersuite is enabled on a server but not on a client, does not properly convey a DHE_EXPORT choice, which allows man-in-the-middle attackers to conduct cipher-downgrade attacks by rewriting a ClientHello with DHE replaced by DHE_EXPORT and then rewriting a ServerHello with DHE_EXPORT replaced by DHE, aka the "Logjam" issue.

References