CVE-2016-0757

OpenStack Image Service (Glance) en versiones anteriores a 2015.1.3 (kilo) y 11.0.x en versiones anteriores a 11.0.2 (liberty), cuando show_multiple_locations está habilitado, permiten a usuarios remotos autenticados cambiar el estado de imagen y cargar nuevos datos de imagen eliminando la última localización de una imagen.

An authorization vulnerability in OpenStack Image service was discovered, which allowed image-status manipulation using locations. By removing the last location of an image, an authenticated user could change the status from 'active' to 'queue'. A malicious tenant could exploit this flaw to silently replace owned image data, regardless of its original creator or visibility settings. Only environments with show_multiple_locations set to true (not default) were affected.

OpenStack Image Service provides discovery, registration, and delivery services for disk and server images. The service provides the ability to copy or snapshot a server image, and immediately store it away. Stored images can be used as a template to get new servers up and running quickly and more consistently than installing a server operating system and individually configuring additional services. An authorization vulnerability in OpenStack Image service was discovered, which allowed image-status manipulation using locations. By removing the last location of an image, an authenticated user could change the status from 'active' to 'queue'. A malicious tenant could exploit this flaw to silently replace owned image data, regardless of its original creator or visibility settings. Only environments with show_multiple_locations set to true were affected.