The REST API in the ovirt-engine in oVirt, as used in Red Hat Enterprise Virtualization (rhevm) 3.4, allows remote authenticated users to read arbitrary files and have other unspecified impact via unknown vectors, related to an XML External Entity (XXE) issue.

IssueDescription:

It was found that the oVirt storage back end did not wipe memory snapshots when VMs were deleted, even if wipe-after-delete (WAD) was enabled for the VM's disks. A remote attacker with credentials to create a new VM could use this flaw to potentially access the contents of memory snapshots in an uninitialized storage volume, possibly leading to the disclosure of sensitive information.

The rhevm-log-collector package in Red Hat Enterprise Virtualization 3.4 uses the PostgreSQL database password on the command line when calling sosreport, which allows local users to obtain sensitive information by listing the processes.