Allele Security Alert
The OpenSSL Project
OpenSSL version 1.1.1
OpenSSL version 1.1.1d
Proof of concept
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.
Fork Protection (CVE-2019-1549)
drbg: ensure fork-safety without using a pthread_atfork handler
CVE-2019-1549 - Red Hat Customer Portal
CVE-2019-1549 | SUSE
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Last modified: December 6, 2019