CVE:CVE-2013-1838
CNNVD:CNNVD-201303-305
OpenStack Compute（Nova）是用Python编写的云计算构造控制器，属于laaS系统的一部分。
OpenStack Nova Grizzly，Folsom (2012.2)，Essex (2012.1)中存在漏洞，该漏洞源于程序没有正确为固定的IPs实施配额。通过调用大量的addFixedIp函数，远程认证的攻击者利用该漏洞导致拒绝服务（资源耗尽和不产生新的实例）。
solution:Upgrade openstack essex to a higher version than 2012.1,and avoid the version 2012.1; Upgrade openstack folsom to a higher version than 2012.2,and avoid the version 2012.2; Upgrade openstack grizzly to a higher version than 2012.2,and avoid the version 2012.2; Upgrade canonical ubuntu_linux to a higher version than 11.10,12.04,12.10,and avoid the version 11.10,12.04,12.10