[原文]Sun Cluster 2.2 through 3.2 for Oracle Parallel Server / Real Application Clusters (OPS/RAC) allows local users to cause a denial of service (cluster node panic or abort) by launching a daemon listening on a TCP port that would otherwise be used by the Distributed Lock Manager (DLM), possibly involving this daemon responding in a manner that spoofs a cluster reconfiguration.
[机译]Sun Cluster 2.2的3.2 / Real Application Clusters的Oracle并行服务器（OPS / RAC）通过允许本地用户导致拒绝服务（群集节点恐慌或中止）启动一个守护进程监听一个TCP端口上，否则将被使用的
Sun Cluster contains a flaw that may allow a local denial of service. The issue is triggered when one Sun Cluster node joins or leaves the cluster, either by system processes or if a local user runs a client application that conflicts with the Cluster TCP port(s). It may cause a panic which leaves the node unconnected, and will result in loss of availability.
Currently, there are no known upgrades or patches to correct this issue. It is possible to correct the flaw by implementing the following workaround(s):
Sun has provided detailed workarounds for each version of the Cluster software.
It is also recommended to grant only trusted users access to affected systems as well as not using the Sun Cluster for client applications.