Red Hat: 2014:0940-01: openstack-nova: Moderate Advisory

    Date24 Jul 2014
    CategoryRed Hat
    Posted ByJoe Shakespeare
    Updated openstack-nova packages that fix one security issue and several bugs are now available for Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for Red Hat Enterprise Linux 7. [More...]
                       Red Hat Security Advisory
    Synopsis:          Moderate: openstack-nova security and bug fix update
    Advisory ID:       RHSA-2014:0940-01
    Product:           Red Hat Enterprise Linux OpenStack Platform
    Advisory URL:
    Issue date:        2014-07-24
    CVE Names:         CVE-2014-3517 
    1. Summary:
    Updated openstack-nova packages that fix one security issue and several
    bugs are now available for Red Hat Enterprise Linux OpenStack Platform 5.0
    (Icehouse) for Red Hat Enterprise Linux 7.
    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.
    2. Relevant releases/architectures:
    OpenStack 5.0 for RHEL 7 - noarch
    3. Description:
    OpenStack Compute (Nova) launches and schedules large networks of virtual
    machines, creating a redundant and scalable cloud computing platform.
    A side-channel timing attack flaw was found in Nova. An attacker could
    possibly use this flaw to guess valid instance ID signatures, giving them
    access to details of another instance, by analyzing the response times of
    requests for instance metadata. This issue only affected configurations
    that proxy metadata requests via Neutron. (CVE-2014-3517)
    Red Hat would like to thank the OpenStack project for reporting this issue.
    Upstream acknowledges Alex Gaynor from Rackspace as the original reporter.
    This update also fixes the following bugs:
    * The GlusterFS driver changes the file name used to point to a volume when
    a snapshot is changed, but in the past the new file name was not stored in
    Compute's block device information.
    As a result, if the VM was shut down and started again, the old file name
    in the snapshot chain was used, resulting in corruption of the qcow2 chain
    and unexpected results in the instance.
    This has been fixed by persisting the new file name in Compute's block
    device info when a snapshot is created. Now, GlusterFS volumes work as
    expected after creating or deleting a snapshot and then rebooting the
    instance. (BZ#1085852)
    * Previously, in some cases, it may not have been possible to attach a
    read-only volume to an instance. (BZ#1100358)
    * The sysfsutils package enables the Compute service to attach Block
    Storage volumes. This package is automatically installed by PackStack.
    However, sysfsutils was not a dependency of the Compute service; as such,
    when not using PackStack, it was possible to deploy OpenStack without
    sysfsutils installed. When this occurred, the Compute service was unable to
    attach Block Storage volumes.
    With this release, the sysfsutils package is now a dependency of the
    Compute service. This ensures that sysfsutils is installed, regardless of
    what deployment method is used. (BZ#1114637)
    * An issue with Fibre Channel Cinder volumes not being removed after the
    image has been destroyed has been fixed. (BZ#1115375)
    * This update fixes legacy group support, allowing you to provide a group
    by name in the scheduler hint instead of using the new server groups API.
    * The openstack-nova package has been updated to upstream version
    2014.1.1, which fixes a number of bugs. (BZ#1117895)
    All openstack-nova users are advised to upgrade to these updated packages,
    which correct these issues.
    4. 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
    5. Bugs fixed (
    1085852 - GlusterFS: Instance is not using the correct snapshot backing file after reboot
    1100358 - can't attach a read only volume to an instance
    1112499 - CVE-2014-3517 openstack-nova: timing attack issue allows access to other instances' configuration information
    1114637 - sysfsutils needs to be a dependency of OpenStack nova
    1115375 - FC cinder volumes still show mpath device on nova host after volumes are detached from instance.
    1116866 - Fix legacy server group support
    1117895 - Rebase openstack-nova to 2014.1.1
    6. Package List:
    OpenStack 5.0 for RHEL 7:
    These packages are GPG signed by Red Hat for security.  Our key and
    details on how to verify the signature are available from
    7. References:
    8. Contact:
    The Red Hat security contact is .  More contact
    details at
    Copyright 2014 Red Hat, Inc.
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