Python Cryptographic Authority pyopenssl version before 17.5.0 fails to release memory before removing last reference in PKCS #12 Store. This can result in a Denial of service if memory runs low or is exhausted. Upstream issue: https://github.com/pyca/pyopenssl/pull/723
Created pyOpenSSL tracking bugs for this issue: Affects: fedora-28 [bug 1640218] Affects: openstack-rdo [bug 1640219]
This issue has been addressed in the following products: Red Hat OpenStack Platform 13.0 (Queens) Via RHSA-2019:0085 https://access.redhat.com/errata/RHSA-2019:0085