Ubuntu Security Notice 2061-1 - 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.
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Ubuntu Security Notice USN-2061-1
December 19, 2013
keystone vulnerability
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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
In general, a standard system update will make all the necessary changes.
References:
http://www.ubuntu.com/usn/usn-2061-1
CVE-2013-6391
Package Information:
https://launchpad.net/ubuntu/+source/keystone/1:2013.2-0ubuntu1.2