← Back to team overview

yahoo-eng-team team mailing list archive

[Bug 1251518] Re: Glance needs a config option to limit the number of additional image properties

 

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

-- 
You received this bug notification because you are a member of Yahoo!
Engineering Team, which is subscribed to Glance.
https://bugs.launchpad.net/bugs/1251518

Title:
  Glance needs a config option to limit the number of additional image
  properties

Status in OpenStack Image Registry and Delivery Service (Glance):
  Fix Released
Status in OpenStack Security Advisories:
  Invalid

Bug description:
  Impact: The vulnerability occurs when glance is directly exposed to
  users.  If users can only hit glance via the compute API, then no
  vulnerability.

  Nova has a configuration option quota_metadata_items (default value
  128) that's documented to limit the number of metadata items that can
  be put on an instance. (I verified that it also applies to image
  metadata using a havana devstack.)

  Glance does not appear to have such an option (I was able to put >500
  additional properties on an image using the glanceclient). I think
  this is a DOS attack vector, since someone could fill the glance
  database with garbage and slow everything down.

To manage notifications about this bug go to:
https://bugs.launchpad.net/glance/+bug/1251518/+subscriptions