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Ubuntu: Security update for Horizon

Thomas Biege discovered that the Horizon authentication mechanism did not validate the next parameter. An attacker could use this to construct a link to legitimate OpenStack web dashboard that redirected the user to a malicious website after authentication.

Updated packages are available from security.ubuntu.com.

==========================================================================
Ubuntu Security Notice USN-1565-1
September 13, 2012

horizon vulnerability
==========================================================================

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

- Ubuntu 12.04 LTS

Summary:

OpenStack Horizon could help expose sensitive information.

Software Description:
- horizon: Web interface for OpenStack cloud infrastructure

Details:

Thomas Biege discovered that the Horizon authentication mechanism
did not validate the next parameter. An attacker could use this to
construct a link to legitimate OpenStack web dashboard that redirected
the user to a malicious website after authentication.

Update instructions:

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

Ubuntu 12.04 LTS:
 openstack-dashboard             2012.1.3+stable~20120815-691dd2-0ubuntu1.1
 python-django-horizon           2012.1.3+stable~20120815-691dd2-0ubuntu1.1

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

References:
 http://www.ubuntu.com/usn/usn-1565-1
 CVE-2012-3540

Package Information:
 https://launchpad.net/ubuntu/+source/horizon/2012.1.3+stable~20120815-691dd2-0ubuntu1.1
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