It was found that under certain conditions, SPICE would fail to lock the screen on a virtual machine between sessions. A user with access to a virtual machine in the Red Hat Enterprise Virtualization Manager could exploit this flaw to gain access to another user's unlocked desktop session. This is a security concern in environments where multiple users have access to the same virtual machine, but they use different operating system credentials to log on to that virtual machine.
Statement: This issue does affect Red Hat Enterprise Virtualization 2 and 3. Red Hat Enterprise Virtualization 2 is now in Production 2 phase of the support and maintenance life cycle. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Virtualization Life Cycle: https://access.redhat.com/support/policy/updates/rhev/.
This issue has been addressed in following products: RHEV Manager version 3.x Via RHSA-2012:1506 https://rhn.redhat.com/errata/RHSA-2012-1506.html
Upstream patch commits: http://gerrit.ovirt.org/gitweb?p=ovirt-engine.git;a=commit;h=60155c43ee6061350f1e7076634a3d503c9b822a http://gerrit.ovirt.org/gitweb?p=ovirt-engine.git;a=commit;h=10cbd7ff186bf53d891671f6b76167a669045af8 http://gerrit.ovirt.org/gitweb?p=ovirt-engine.git;a=commit;h=b60256a20d20f496cebb8d55ddd9c1772cc8b260 http://gerrit.ovirt.org/gitweb?p=ovirt-engine.git;a=commit;h=9c9dec5350616fc6b9cc4b96ec8391dbdff111ef http://gerrit.ovirt.org/gitweb?p=ovirt-engine.git;a=commit;h=15f4aae7a4be3227543fe514d4e9be38a0b25ec9