A flaw was found in the way MoveDisk command checks permissions on target storage domain. A privileged user (storage admin of other storage domain) can use this flaw to conduct denial of service attack on the target domain by exhausting the available free space. Acknowledgements: This issue was discovered by Ondrej Machacek of Red Hat.
This issue has been addressed in following products: RHEV Manager version 3.1 Via RHSA-2013:0211 https://rhn.redhat.com/errata/RHSA-2013-0211.html