Glance could be made to expose sensitive information over the network under certain circumstances.

==========================================================================
Ubuntu Security Notice USN-2003-1
October 23, 2013

glance vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 13.04
- Ubuntu 12.10

Summary:

Glance could be made to expose sensitive information over the network
under certain circumstances.

Software Description:
- glance: OpenStack Image Registry and Delivery Service

Details:

Stuart McLaren discovered that Glance did not properly enforce the
'download_image' policy for cached images. An authenticated user could
exploit this to obtain sensitive information in an image protected by this
setting.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 13.04:
  python-glance                   1:2013.1.3-0ubuntu1.1

Ubuntu 12.10:
  python-glance                   2012.2.4-0ubuntu1.1

In general, a standard system update will make all the necessary changes.

References:
  http://www.ubuntu.com/usn/usn-2003-1
  CVE-2013-4428

Package Information:
  https://launchpad.net/ubuntu/+source/glance/1:2013.1.3-0ubuntu1.1
  https://launchpad.net/ubuntu/+source/glance/2012.2.4-0ubuntu1.1