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Ubuntu Security Notice USN-1564-1

Ubuntu Security Notice USN-1564-1
Posted Sep 14, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1564-1 - Dolph Mathews discovered that when roles are granted and revoked to users in Keystone, pre-existing tokens were not updated or invalidated to take the new roles into account. An attacker could use this to continue to access resources that have been revoked.

tags | advisory
systems | linux, ubuntu
advisories | CVE-2012-4413
MD5 | fe7f5e0dad1c470fcde14d463ed7f572

Ubuntu Security Notice USN-1564-1

Change Mirror Download
Content-Disposition: inline

==========================================================================Ubuntu Security Notice USN-1564-1
September 13, 2012

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

- Ubuntu 12.04 LTS

Summary:

OpenStack Keystone did not properly handle user role changes

Software Description:
- keystone: OpenStack identity service

Details:

Dolph Mathews discovered that when roles are granted and revoked to
users in Keystone, pre-existing tokens were not updated or invalidated
to take the new roles into account. An attacker could use this to
continue to access resources that have been revoked.

Update instructions:

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

Ubuntu 12.04 LTS:
keystone 2012.1+stable~20120824-a16a0ab9-0ubuntu2.2
python-keystone 2012.1+stable~20120824-a16a0ab9-0ubuntu2.2

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

References:
http://www.ubuntu.com/usn/usn-1564-1
CVE-2012-4413

Package Information:
https://launchpad.net/ubuntu/+source/keystone/2012.1+stable~20120824-a16a0ab9-0ubuntu2.2

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