USN-2061-1: OpenStack Keystone vulnerability

19 December 2013

keystone vulnerability

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

  • Ubuntu 13.10

Summary

Keystone access controls could be circumvented via EC2-style tokens.

Software Description

  • keystone - OpenStack identity service

Details

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 trustor’s roles.

Update instructions

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

Ubuntu 13.10
python-keystone - 1:2013.2-0ubuntu1.2

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.

References