USN-1730-1: OpenStack Keystone vulnerabilities

20 February 2013

keystone vulnerabilities

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

  • Ubuntu 12.10
  • Ubuntu 12.04 LTS

Summary

Keystone could be made to crash or expose sensitive information over the network.

Software Description

  • keystone - OpenStack identity service

Details

Nathanael Burton discovered that Keystone did not properly verify disabled users. An authenticated but disabled user would continue to have access rights that were removed. (CVE-2013-0282)

Jonathan Murray discovered that Keystone would allow XML entity processing. A remote unauthenticated attacker could exploit this to cause a denial of service via resource exhaustion. Authenticated users could also use this to view arbitrary files on the Keystone server. (CVE-2013-1664, CVE-2013-1665)

Update instructions

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

Ubuntu 12.10
python-keystone - 2012.2.1-0ubuntu1.2
Ubuntu 12.04 LTS
python-keystone - 2012.1+stable~20120824-a16a0ab9-0ubuntu2.5

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