Synopsis

Moderate: openstack-nova security and bug fix update

Type/Severity

Security Advisory: Moderate

Topic

Updated openstack-nova packages that fix multiple security issues and
several bugs are now available for Red Hat Enterprise Linux OpenStack
Platform 4.0.

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

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.

It was discovered that the metadata agent in OpenStack Networking was
missing an authorization check on the device ID that is bound to a specific
port. A remote tenant could guess the instance ID bound to a port and
retrieve metadata of another tenant, resulting in information disclosure.
Note that only OpenStack Networking setups running neutron-metadata-agent
were affected. (CVE-2013-6419)

It was found that nova used directories that were writable to by all local
users to temporarily store live snapshots. A local attacker with access to
such a directory could use this flaw to read and modify the contents of
live snapshots. (CVE-2013-7048)

A flaw was found in the way the libvirt driver handled short-lived disk
back-up files on Compute nodes. An authenticated attacker could use this
flaw to create a large number of such files, exhausting all available space
on Compute node disks, and potentially causing a denial of service.
Note that only Compute setups using the libvirt driver were affected.
(CVE-2013-6437)

It was discovered that the libvirt driver did not properly handle live
migration of virtual machines. An authenticated attacker could use this
flaw to gain access to a snapshot of a migrated virtual machine. Note that
only setups using KVM live block migration were affected. (CVE-2013-7130)

Red Hat would like to thank the OpenStack Project for reporting
CVE-2013-6419, CVE-2013-6437, and CVE-2013-7130. Upstream acknowledges
Aaron Rosen of VMware as the original reporter of CVE-2013-6419, Phil Day
from HP as the original reporter of CVE-2013-6437, and Loganathan Parthipan
as the original reporter of CVE-2013-7130.

These updated openstack-nova packages have been upgraded to upstream
version 2013.2.2, which provides a number of bug fixes over the previous
version. (BZ#1065317)

Bug fixes:

• The GlusterFS volume connector in nova did not pass a port to libvirt for
  the GlusterFS disk specification. Attaching a volume failed with a libvirt
  error indicating the port field was missing. This update fixes this bug by
  providing the default Gluster port in nova. (BZ#1020979)
  
• The database back end did not handle the 2013 MySQL error code (Lost
  connection). The 2013 MySQL error code has been added to the collection of
  known database error codes. (BZ#1060771)
  
• OpenStack Compute set the smbios product/vendor information to OpenStack
  values, which Red Hat Satellite 5 did not recognize when processing
  entitlements. (BZ#1059414)
  
• Prior to this update, nova-api did not pass the absolute path of the
  configuration file to the api-paste library if a file with the same name
  was found in the current directory. (BZ#1039554)
  
• The definition of the libvirt_info method in the RBD back-end class was
  missing a positional argument that the base class defined. (BZ#1063445)
  
• Rebooting a host caused all of its instances to stop and change to the
  SHUTDOWN power state. The unpause action was only allowed on instances with
  the PAUSED power state. (BZ#1047863)
  
• The previous default of writing zeros over deleted volumes took a
  significant amount of time. It is now possible to set a global
  configuration setting to clear only a part of a volume, or to disable
  clearing completely. Additionally, a new 'shred' capability is available to
  overwrite volumes with random data instead of zeros. (BZ#1062377)
  
• In OpenStack Compute, low-level QPID debug log messages are no longer
  shown by default. These previously appeared due to the 'level=debug'
  parameter set in the nova.conf file. (BZ#1047849)
  

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

Solution

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/site/articles/11258

Affected Products

• Red Hat OpenStack 4.0 x86_64

Fixes

• BZ - 1020979 - After configuring cinder for libgfapi, volumes create but do not attach
• BZ - 1039148 - CVE-2013-6419 OpenStack Neutron and Nova: Metadata queries from Neutron to Nova are not restricted by tenant
• BZ - 1039554 - Cannot resolve relative uri 'config:api-paste.ini'; no relative_to keyword argument given
• BZ - 1040786 - CVE-2013-7048 Openstack Nova: insecure directory permissions in snapshots
• BZ - 1043106 - CVE-2013-6437 openstack-nova: DoS through ephemeral disk backing files
• BZ - 1047849 - openstack-nova: remove qpid logs from the compute logs
• BZ - 1047863 - Openstack-Nova: Unpause instance after host reboot fails
• BZ - 1055400 - CVE-2013-7130 OpenStack nova: Live migration can leak root disk into ephemeral storage
• BZ - 1060771 - nova does not read sql db config option
• BZ - 1062377 - RFE: configurable volume clearing options for nova
• BZ - 1065317 - Rebase openstack-nova to 2013.2.2

CVEs

• CVE-2013-6419
• CVE-2013-7130
• CVE-2013-6437
• CVE-2013-7048

References

• https://access.redhat.com/security/updates/classification/#moderate

Red Hat OpenStack 4.0

SRPM
openstack-nova-2013.2.2-2.el6ost.src.rpm	SHA-256: 75e1108c42ce9656f571102da3f6f917b151dfe0fe2fbe3c182b9076a1ecc74b
x86_64
openstack-nova-2013.2.2-2.el6ost.noarch.rpm	SHA-256: 690f8c0d92d9bb342aa84dfbcda3700a3e0f762d4616bece2dcecac01428479f
openstack-nova-api-2013.2.2-2.el6ost.noarch.rpm	SHA-256: aca7fec4884d42eadf60b3c5f107ba97724e7e82851683ad12a3b03cce5cfcb5
openstack-nova-cells-2013.2.2-2.el6ost.noarch.rpm	SHA-256: 3f2eb80ca0cb71678da4fa26ca88babbd65cef15ac039cfe6c9ac4130e77d044
openstack-nova-cert-2013.2.2-2.el6ost.noarch.rpm	SHA-256: d8f923ec72cfdd252fdab16aefff44d34198526adbe8641faf82cdeb66a73c6d
openstack-nova-common-2013.2.2-2.el6ost.noarch.rpm	SHA-256: 2f8e9ce5999be8fc1ed74af43642447c64340f07185779b0b4d73729b36fcb97
openstack-nova-compute-2013.2.2-2.el6ost.noarch.rpm	SHA-256: 324504d6e079c57e52b8bea84aaece396594aae9fefe5a85150c2038a352ad8c
openstack-nova-conductor-2013.2.2-2.el6ost.noarch.rpm	SHA-256: 4eb40568d35cbf326fea515373f884c882c2b8e9fc84a0ad870d9566880e5c41
openstack-nova-console-2013.2.2-2.el6ost.noarch.rpm	SHA-256: 59b38f44049ecd71e5e5fca80b0ca3f300ab10545a11925b6bbb52230374df3e
openstack-nova-doc-2013.2.2-2.el6ost.noarch.rpm	SHA-256: 71328e940567dda909bb97478dcaf54743171d214e3f4eadec30c311ad9c309a
openstack-nova-network-2013.2.2-2.el6ost.noarch.rpm	SHA-256: 76549a38892f35530e913eb0d242e0fc334005cb4f5f2affe3a62d2ec2666264
openstack-nova-novncproxy-2013.2.2-2.el6ost.noarch.rpm	SHA-256: 22d6942f05e2b8da4755850baedeb2eda260f8356a2472fa712ffdf9f02b1061
openstack-nova-objectstore-2013.2.2-2.el6ost.noarch.rpm	SHA-256: 506d0e912c70fc5594c3243b84c50bd91e770c47bf89c5b1fc0caa8eb1e540ad
openstack-nova-scheduler-2013.2.2-2.el6ost.noarch.rpm	SHA-256: 41c19d67b4ed795e1c45a4070aa0777b14c2c16c6d470fa60e23d3ed67fd1754
python-nova-2013.2.2-2.el6ost.noarch.rpm	SHA-256: 22e1b7d3569db21b625d8688dbfac470e331780639fdeb86470212a40e6d492b