Red Hat Security Advisory 2015-1918-01 – Red Hat Gluster Storage is a software only scale-out storage solution that provides flexible and affordable unstructured data storage. It unifies data storage and infrastructure, increases performance, and improves availability and manageability to meet enterprise-level storage challenges. Red Hat Gluster Storage’s Unified File and Object Storage is built on OpenStack’s Object Storage. A flaw was found in the way swiftonfile serialized and stored metadata on disk by using Python’s pickle module. A remote, authenticated user could use this flaw to execute arbitrary code on the storage node.