========================================================================== Ubuntu Security Notice USN-2324-1 August 21, 2014
A security issue affects these releases of Ubuntu and its derivatives:
Several security issues were fixed in OpenStack Keystone.
Software Description: - keystone: OpenStack identity service
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)
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: http://www.ubuntu.com/usn/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
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