Red Hat Security Advisory 2015-1495-01 – 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 metadata constraints in OpenStack Object Storage. By adding metadata in several separate calls, a malicious user could bypass the max_meta_count constraint, and store more metadata than allowed by the configuration.