Red Hat: 2014:0578-01: openstack-nova: Moderate Advisory

    Date29 May 2014
    CategoryRed Hat
    Posted ByJoe Shakespeare
    Updated openstack-nova packages that fix one security issue, several bugs, and add one enhancement are now available for Red Hat Enterprise Linux OpenStack Platform 4.0. [More...]
                       Red Hat Security Advisory
    Synopsis:          Moderate: openstack-nova security, bug fix, and enhancement update
    Advisory ID:       RHSA-2014:0578-01
    Product:           Red Hat Enterprise Linux OpenStack Platform
    Advisory URL:
    Issue date:        2014-05-29
    CVE Names:         CVE-2014-0134 
    1. Summary:
    Updated openstack-nova packages that fix one security issue, several bugs,
    and add one enhancement 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.
    2. Relevant releases/architectures:
    Red Hat Enterprise Linux OpenStack Platform 4.0 - noarch
    3. 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 found that overwriting the disk inside of an instance with a
    malicious image, and then switching the instance to rescue mode, could
    potentially allow an authenticated user to access arbitrary files on the
    compute host depending on the file permissions and SELinux constraints of
    those files. Only setups that used libvirt to spawn instances and which had
    the use of cow images disabled ("use_cow_images = False" in nova
    configuration) were affected. (CVE-2014-0134)
    Red Hat would like to thank the OpenStack Project for reporting this issue.
    Upstream acknowledges Stanislaw Pitucha from Hewlett Packard as the
    original reporter.
    Bug fixes:
    * The Compute libguestfs did not perform tear down correctly in certain
    cases, such as when attempting to perform SSH key injection when no SSH
    keys were specified. As a result, libguestfs qemu instances would remain
    running, even after the Compute instance with which they were associated
    was destroyed. This has been fixed and now tear down of libguestfs occurs
    correctly. (BZ#1022627)
    * Qpid's driver reconnection delay is not configurable. This and the fact
    that the hard-coded delay was quite high became a blocker issue from an HA
    perspective. Making this value configurable is not possible for this
    version, so the hard-coded delay was changed. The new delay cap is 5
    seconds. (BZ#1060772)
    * Nova was creating a temporary VMware snapshot during a nova snapshot, but
    not deleting it on completion. Thus VMware guests could end up with a large
    number of unnecessary snapshots. The temporary VMware snapshot is now
    deleted on completion of the nova snapshot operation. (BZ#1069429)
    * The Nova vmware driver was not passing the iscsi server location to the
    instance, hence it was not possible to add a cinder iscsi disk to a VMware
    instance. The nova vmware driver now correctly passes the iscsi server
    location to the instance and it is possible to add a cinder iscsi disk to a
    VMware instance. (BZ#1069432)
    * The nova VMware driver was assigning VNC ports in a way which could cause
    collisions between guests. There was a small chance that 2 instances could
    be created with the same VNC port. If both instances ran on the same ESX
    host, only one of their consoles would be available. However, that console
    would be presented when requested for both instances. This has been fixed
    so that the nova VMware driver now allocates VNC ports which are unique to
    a vcenter, and a user of one instance will not be presented with the
    console of another. (BZ#1077017)
    * When troubleshooting production systems it is desirable to be able to
    trace all data base queries, web REST calls, messaging service RPC calls,
    and libvirt API calls associated with invocation of a user command or
    background job. Hence, the ability has been added to obtain a debug dump of
    the system state for an OpenStack service based process. For example, upon
    sending SIGUSR1, a dump of all native threads, green threads, live
    configuration, and any other relevant info is triggered. (BZ#1071469)
    All openstack-nova users are advised to upgrade to these updated packages,
    which correct these issues and add this enhancement.
    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 (
    1022627 - stale qemu processes left running in nova due to incorrect libguestfs cleanup
    1060772 - nova qpid reconnection delay must be more accurate
    1069429 - VMware: delete vm snapshot after nova snapshot
    1069432 - VMware: iscsi target discovery fails while attaching volumes
    1071469 - [RFE][nova]: Provide for a live debug dump of system state
    1077017 - VMware: fix the VNC port allocation
    1078002 - CVE-2014-0134 openstack-nova: Nova host data leak to vm instance in rescue mode
    1081001 - Need to allow disabling of bandwidth polling periodic task
    1085005 - openstack-nova: several instances are able to be configure the same bootable volume
    1089070 - Depend on sufficiently new version of libvirt
    6. Package List:
    Red Hat Enterprise Linux OpenStack Platform 4.0:
    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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