Ubuntu Update for Linux kernel vulnerabilities USN-1552-1

Please Install the Updated Packages.

Dolph Mathews discovered that OpenStack Keystone did not properly restrict to administrative users the ability to update users' tenants. A remote attacker that can reach the administrative API can use this to add any user to any tenant. (CVE-2012-3542) Derek Higgins discovered that OpenStack Keystone did not properly implement token expiration. A remote attacker could use this to continue to access an account that has been disabled or has a changed password. (CVE-2012-3426)

keystone on Ubuntu 12.04 LTS