7.8 - RHSA-2017:0282

Problem Description:

An update for openstack-nova, openstack-cinder, openstack-glance, and python-oslo-concurrency is now available for Red Hat Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL 7.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL 7 - noarch

3. Description:

The Oslo concurrency library has utilities for safely running multi-thread, multi-process applications using locking mechanisms, and for running external processes.

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 and controlling access through users and projects.

OpenStack Image Service (glance) provides discovery, registration, and delivery services for disk and server images. The service provides the ability to copy or snapshot a server image, and immediately store it away. Stored images can be used as a template to get new servers up and running quickly and more consistently than installing a server operating system and individually configuring additional services.

OpenStack Block Storage (cinder) manages block storage mounting and the presentation of such mounted block storage to instances. The backend physical storage can consist of local disks, or Fiber Channel, iSCSI, and NFS mounts attached to Compute nodes. In addition, Block Storage supports volume backups, and snapshots for temporary save and restore operations. Programmatic management is available via Block Storage's API.

Security Fix(es):

* A resource vulnerability in the OpenStack Compute (nova), Block Storage (cinder), and Image (glance) services was found in their use of qemu-img. An unprivileged user could consume as much as 4 GB of RAM on the compute host by uploading a malicious image. This flaw could lead possibly to host out-of-memory errors and negatively affect other running tenant instances. oslo.concurrency has been updated to support process limits ('prlimit'), which is needed to fix this flaw. (CVE-2015-5162)

This issue was discovered by Richard W.M. Jones (Red Hat).

Bug Fix(es):

* qemu-img calls were unrestricted by ulimit. oslo.concurrency has been updated to add support for process limits ('prlimit'), which is needed to fix the CVE-2015-5162 security vulnerability. (BZ#1383415)

4. Solution:

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

5. Bugs fixed (https://bugzilla.redhat.com/):

1268303 - CVE-2015-5162 openstack-nova/glance/cinder: Malicious image may exhaust resources 1316791 - Instance was deleted successfully without detaching its volume, if nova-compute was killed during running "nova delete" 1349005 - cinder volume backup throws UnicodeDecodeError: 'ascii' and access denied 1365899 - Missing dependency of python-oslo-log and python-oslo-policy in openstack-cinder 1370598 - multipathd segfault during volume attach 1378906 - nova-scheduler fails to start because of the too big nova database 1380289 - [Backport] Block based migration doesn't work for instances that have a volume attached 1381533 - Multi-Ephemeral instance Live Block Migration fails silently 1383415 - [CVE-2015-5162] oslo.concurrency: Backport support for 'prlimit' parameter [OSP-7] 1386268 - NetApp Cinder driver: cloning operations are unsuccessful 1391970 - [tempest] test_delete_attached_volume fails in RHOS7 1394964 - Live migration with config-drive fails with InvalidSharedStorage error 1399760 - rbd snapshot delete fails if backend is missing file 1409820 - Creating Encrypted Volumes with Cinder(Ceph backend) gives false positive 1410046 - Multiple attempts made to delete iSCSI multipath path devices 1416884 - [7.0.z] nova creates an invalid ethernet/bridge interface definition in virsh xml 1420451 - revert Use stashed volume connector in _local_cleanup_bdm_volumes from openstack-nova-2015.1.4-28.el7ost