Launchpad.net

CVE 2013-6426

The cloudformation-compatible API in OpenStack Orchestration API (Heat) before Havana 2013.2.1 and Icehouse before icehouse-2 does not properly enforce policy rules, which allows local in-instance users to bypass intended access restrictions and (1) create a stack via the CreateStack method or (2) update a stack via the UpdateStack method.

See the CVE page on Mitre.org for more details.