(RHSA-2014:1782) Important: openstack-nova security, bug fix, and enhancement update

2014-11-03T13:21:32
ID RHSA-2014:1782
Type redhat
Reporter RedHat
Modified 2018-03-19T16:26:45

Description

OpenStack Compute (nova) launches and schedules large networks of virtual machines, creating a redundant and scalable cloud computing platform. Compute provides the software, control panels, and APIs required to orchestrate a cloud, including running virtual machine instances, managing networks, and controlling access through users and projects.

A race condition flaw was found in the way the nova VMware driver handled VNC port allocation. An authenticated user could use this flaw to gain unauthorized console access to instances belonging to other tenants by repeatedly spawning new instances. Note that only nova setups using the VMware driver and the VNC proxy service were affected. (CVE-2014-8750)

CVE-2014-2573, the fix for which was provided with the initial release of Red Hat Enterprise Linux OpenStack Platform 5.0 for Red Hat Enterprise Linux 7, describes a flaw in the nova VMware driver. An authenticated user could exceed their quota by placing an image into rescue and then deleting it, causing the rescue image to be left behind.

It was found that the fix for CVE-2014-2573 was incomplete. A virtual machine could be forced into the ERROR state from rescue by issuing a suspend command. Virtual machines deleted from the ERROR state would still leave the rescue image behind, allowing a user to exceed their quota. Note that only setups using the nova VMware driver were affected. (CVE-2014-3608)

The CVE-2014-3608 issue was discovered by Garth Mollett of Red Hat Product Security.

The openstack-nova packages have been upgraded to upstream version 2014.1.3, which provides a number of bug fixes and enhancements over the previous version. (BZ#1149737)

This update also fixes the following bug:

  • Previously, unhandled database deadlock conditions triggered with some database configuration edge cases. "Deadlock found when trying to get lock; try restarting transaction" messages may have been logged, and database transactions may have been lost. With this update, actions are retried on deadlock conditions, resulting in robust database communication. (BZ#1141972)

All openstack-nova users are advised to upgrade to these updated packages, which correct these issues and add these enhancements.