CVE-2019-1549

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).

Notes