Provide references for CVE-2019-19687.
Where can I find more information about CVE-2019-19687?
References are available at: https://bugs.launchpad.net/keystone/+bug/1855080, https://review.opendev.org/#/c/697355/, https://review.opendev.org/#/c/697611/, https://review.opendev.org/#/c/697731/, https://security.openstack.org/ossa/OSSA-2019-006.html, http://www.openwall.com/lists/oss-security/2019/12/11/8, https://access.redhat.com/errata/RHSA-2019:4358, https://usn.ubuntu.com/4262-1/.