Openstack Compute (Nova) Folsom, 2012.1, and 2011.3 does not limit the number of security group rules, which allows remote authenticated users with certain permissions to cause a denial of service (CPU and hard drive consumption) via a network request that triggers a large number of iptables rules.

References

• https://nvd.nist.gov/vuln/detail/CVE-2012-2101
• openstack/nova@1f644d2
• openstack/nova@8c8735a
• openstack/nova@a67db45
• https://bugs.launchpad.net/nova/+bug/969545
• https://exchange.xforce.ibmcloud.com/vulnerabilities/75243
• https://lists.launchpad.net/openstack/msg10268.html
• http://lists.fedoraproject.org/pipermail/package-announce/2012-May/079434.html
• http://lists.fedoraproject.org/pipermail/package-announce/2012-May/079551.html
• http://secunia.com/advisories/49034
• http://secunia.com/advisories/49048
• http://ubuntu.com/usn/usn-1438-1
• http://www.osvdb.org/81641