=========================================================================Ubuntu Security Notice USN-2324-1
August 21, 2014

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

- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in OpenStack Keystone.

Software Description:
- keystone: OpenStack identity service

Details:

Steven Hardy discovered that OpenStack Keystone did not properly handle
chained delegation. A remove authenticated attacker could use this to
gain privileges by creating a new token with additional roles.
(CVE-2014-3476)

Jamie Lennox discovered that OpenStack Keystone did not properly validate
the project id. A remote authenticated attacker may be able to use this to
access other projects. (CVE-2014-3520)

Brant Knudson and Lance Bragstad discovered that OpenStack Keystone would
not always revoke tokens correctly. If Keystone were configured to use
revocation events, a remote authenticated attacker could continue to have
access to resources. (CVE-2014-5251, CVE-2014-5252, CVE-2014-5253)

Update instructions:

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

Ubuntu 14.04 LTS:
  python-keystone                 1:2014.1.2.1-0ubuntu1.1

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

References:
  https://ubuntu.com/security/notices/USN-2324-1
  CVE-2014-3476, CVE-2014-3520, CVE-2014-5251, CVE-2014-5252,
  CVE-2014-5253

Package Information:
  https://launchpad.net/ubuntu/+source/keystone/1:2014.1.2.1-0ubuntu1.1