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[Tristan Cacqueray <tdecacqu@xxxxxxxxxx>]

** Changed in: ossa
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1482371

Title:
  [OSSA 2015-019] Image status can be changed by passing header 'x
  -image-meta-status' with PUT operation using v1 (CVE-2015-5251)

Status in Glance:
  Fix Committed
Status in OpenStack Security Advisory:
  Fix Released

Bug description:
  Using Glance v1, one is able to change the status of an image to any
  one of the valid statuses by passing the header 'x-image-meta-status'
  with PUT on /images/<image id>.  This bug provides a way for an image
  to transition states that are otherwise not possible in an image's
  lifecycle.

  See http://paste.openstack.org/show/pNL7kvIZUz7cWJQwX64d/ for a
  reproduction of this behavior on devstack.

  As shown in the above paste, though one is able to change the status
  of an active image to queued, uploading data after re-setting the
  status to queued fails with a 400[1].  Though the purpose of [1]
  appears to be slightly different, it's fortunately saving us from
  badly breaking the immutability guarantees of glance images.

  [1]
  https://github.com/openstack/glance/blob/master/glance/api/v1/images.py#L760-L765

  NOTE: Marking this as a security vulnerability for now as users would
  be able to activate the deactivated images on their own. This probably
  affects deployments only where v1 is exposed publicly. However, it's
  probably worth discussing this from a security perspective as well.

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