Use of Insufficiently Random Values Affecting openssl package, versions <1.1.1c-1ubuntu4.1


low

Snyk CVSS

    Attack Complexity Low

    Threat Intelligence

    EPSS 1.14% (85th percentile)
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NVD
5.3 medium
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Red Hat
4.8 medium

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  • Snyk ID SNYK-UBUNTU1910-OPENSSL-578624
  • published 11 Sep 2019
  • disclosed 10 Sep 2019

How to fix?

Upgrade Ubuntu:19.10 openssl to version 1.1.1c-1ubuntu4.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssl package and not the openssl package as distributed by Ubuntu. See How to fix? for Ubuntu:19.10 relevant fixed versions and status.

OpenSSL 1.1.1 introduced a rewritten random number generator (RNG). This was intended to include protection in the event of a fork() system call in order to ensure that the parent and child processes did not share the same RNG state. However this protection was not being used in the default case. A partial mitigation for this issue is that the output from a high precision timer is mixed into the RNG state so the likelihood of a parent and child process sharing state is significantly reduced. If an application already calls OPENSSL_init_crypto() explicitly using OPENSSL_INIT_ATFORK then this problem does not occur at all. Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c).