CVE-2019-1549

Description

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).

How to fix CVE-2019-1549

To remediate CVE-2019-1549, upgrade the affected package to a fixed version below.

• —upgrade to 1.1.1d-r0 or later
• —upgrade to 1.1.1d-r1 or later
• —upgrade to 1.1.1d-1 or later

Is CVE-2019-1549 being exploited?

Low — EPSS is 2.6%, meaning exploitation activity has not been observed at scale.

Affected packages (3)

• from 0, < 1.1.1d-r0
• from 0, < 1.1.1d-r1
• from 0, < 1.1.1d-1

CVSS scores

References (2)

• ADVISORYsecurity.alpinelinux.org/vuln/CVE-2019-1549
• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2019-1549