View at Official ubuntu advisory, NVD, CVE.org · CVE detail
Freshness: upstream tracker timestamp is available; use API updated time as primary recency signal.
CVE-2012-4457 medium priority: Ubuntu including 1 source packages (keystone), 7 status rows across 7 suites (hardy, lucid, natty, oneiric, precise, quantal, upstream): DNE 3, released 2, ignored 1, not-affected 1.
OpenStack Keystone Essex before 2012.1.2 and Folsom before folsom-3 does not properly handle authorization tokens for disabled tenants, which allows remote authenticated users to access the tenant's resources by requesting a token for the tenant.