The (1) ListNetworkACL and (2) listNetworkACLLists APIs in Apache CloudStack before 4.2.1 allow remote authenticated users to list network ACLS for other users via a crafted request.
https://issues.apache.org/jira/browse/CLOUDSTACK-5145
https://blogs.apache.org/cloudstack/entry/cve_2014_0031_cloudstack_listnetworkacl