openstack-nova is vulnerable to denial of service. The VM instances performed look-ups based on an IP address filter that is not properly processed, allowing an attacker with sufficient privileges in the OpenStack installation with a large amount of VMs to cause excessive CPU consumption in the main nova process.
lists.openstack.org/pipermail/openstack-announce/2014-October/000301.html
rhn.redhat.com/errata/RHSA-2015-0843.html
rhn.redhat.com/errata/RHSA-2015-0844.html
www.securityfocus.com/bid/70777
access.redhat.com/errata/RHSA-2015:0843
access.redhat.com/errata/RHSA-2015:0844
access.redhat.com/security/cve/CVE-2014-3708
access.redhat.com/security/updates/classification/#important
access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux_OpenStack_Platform/5/html/Release_Notes/index.html
access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux_OpenStack_Platform/5/html/Technical_Notes/index.html
bugs.launchpad.net/nova/+bug/1358583
bugzilla.redhat.com/show_bug.cgi?id=1154951
bugzilla.redhat.com/show_bug.cgi?id=1170558
bugzilla.redhat.com/show_bug.cgi?id=1174424
bugzilla.redhat.com/show_bug.cgi?id=1180602
rhn.redhat.com/errata/RHSA-2015-0844.html