Ubuntu Security Notice USN-1552-1
3rd September, 2012
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.04 LTS
Two security issues were fixed in OpenStack Keystone.
- keystone - OpenStack identity service
Dolph Mathews discovered that OpenStack Keystone did not properly
restrict to administrative users the ability to update users'
tenants. A remote attacker that can reach the administrative API can
use this to add any user to any tenant. (CVE-2012-3542)
Derek Higgins discovered that OpenStack Keystone did not properly
implement token expiration. A remote attacker could use this to
continue to access an account that has been disabled or has a changed
The problem can be corrected by updating your system to the following package version:
- Ubuntu 12.04 LTS:
- keystone 2012.1+stable~20120824-a16a0ab9-0ubuntu2.1
- python-keystone 2012.1+stable~20120824-a16a0ab9-0ubuntu2.1
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.