Ubuntu Security Notice USN-2061-1
19th December, 2013
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 13.10
Keystone access controls could be circumvented via EC2-style tokens.
- keystone - OpenStack identity service
Steven Hardy discovered that Keystone did not properly enforce trusts when
using the ec2tokens API. An authenticated attacker could exploit this to
retrieve a token not scoped to the trust and elevate privileges to the
The problem can be corrected by updating your system to the following package version:
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.