PRNG Seed Error Affecting nss package, versions *


low

Snyk CVSS

    Attack Complexity High
    Confidentiality High

    Threat Intelligence

    EPSS 4.28% (93rd percentile)
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NVD
5.9 medium
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SUSE
4.8 medium
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Red Hat
4.8 medium

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  • Snyk ID SNYK-DEBIAN9-NSS-421425
  • published 25 Sep 2018
  • disclosed 29 Apr 2019

How to fix?

There is no fixed version for Debian:9 nss.

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.

When handling a SSLv2-compatible ClientHello request, the server doesn't generate a new random value but sends an all-zero value instead. This results in full malleability of the ClientHello for SSLv2 used for TLS 1.2 in all versions prior to NSS 3.39. This does not impact TLS 1.3.