Red Hat: 2015:0008-01: libvirt: Low Advisory

    Date05 Jan 2015
    1120
    Posted ByJoe Shakespeare
    Updated libvirt packages that fix one security issue and three bugs are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Low security [More...]
    =====================================================================
                       Red Hat Security Advisory
    
    Synopsis:          Low: libvirt security and bug fix update
    Advisory ID:       RHSA-2015:0008-01
    Product:           Red Hat Enterprise Linux
    Advisory URL:      https://rhn.redhat.com/errata/RHSA-2015-0008.html
    Issue date:        2015-01-05
    CVE Names:         CVE-2014-7823 
    =====================================================================
    
    1. Summary:
    
    Updated libvirt packages that fix one security issue and three bugs are now
    available for Red Hat Enterprise Linux 7.
    
    Red Hat Product Security has rated this update as having Low 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 Client (v. 7) - x86_64
    Red Hat Enterprise Linux Client Optional (v. 7) - x86_64
    Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64
    Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64
    Red Hat Enterprise Linux Server (v. 7) - ppc64, s390x, x86_64
    Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, s390x, x86_64
    Red Hat Enterprise Linux Workstation (v. 7) - x86_64
    Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64
    
    3. Description:
    
    The libvirt library is a C API for managing and interacting with the
    virtualization capabilities of Linux and other operating systems.
    In addition, libvirt provides tools for remote management of
    virtualized systems.
    
    It was found that when the VIR_DOMAIN_XML_MIGRATABLE flag was used, the
    QEMU driver implementation of the virDomainGetXMLDesc() function could
    bypass the restrictions of the VIR_DOMAIN_XML_SECURE flag. A remote
    attacker able to establish a read-only connection to libvirtd could use
    this flaw to leak certain limited information from the domain XML data.
    (CVE-2014-7823)
    
    This issue was discovered by Eric Blake of Red Hat.
    
    This update also fixes the following bugs:
    
    * In Red Hat Enterprise Linux 6, libvirt relies on the QEMU emulator to
    supply the error message when an active commit is attempted. However, with
    Red Hat Enterprise Linux 7, QEMU added support for an active commit, but an
    additional interaction from libvirt to fully enable active commits is still
    missing. As a consequence, attempts to perform an active commit caused
    libvirt to become unresponsive. With this update, libvirt has been fixed to
    detect an active commit by itself, and now properly declares the feature as
    unsupported. As a result, libvirt no longer hangs when an active commit is
    attempted and instead produces an error message.
    
    Note that the missing libvirt interaction will be added in Red Hat
    Enterprise Linux 7.1, adding full support for active commits. (BZ#1150379)
    
    * Prior to this update, the libvirt API did not properly check whether a
    Discretionary Access Control (DAC) security label is non-NULL before trying
    to parse user/group ownership from it. In addition, the DAC security label
    of a transient domain that had just finished migrating to another host is
    in some cases NULL. As a consequence, when the virDomainGetBlockInfo API
    was called on such a domain, the libvirtd daemon sometimes terminated
    unexpectedly. With this update, libvirt properly checks DAC labels before
    trying to parse them, and libvirtd thus no longer crashes in the described
    scenario. (BZ#1171124)
    
    * If a block copy operation was attempted while another block copy was
    already in progress to an explicit raw destination, libvirt previously
    stopped regarding the destination as raw. As a consequence, if the
    qemu.conf file was edited to allow file format probing, triggering the bug
    could allow a malicious guest to bypass sVirt protection by making libvirt
    regard the file as non-raw. With this update, libvirt has been fixed to
    consistently remember when a block copy destination is raw, and guests can
    no longer circumvent sVirt protection when the host is configured to allow
    format probing. (BZ#1149078)
    
    All libvirt users are advised to upgrade to these updated packages, which
    contain backported patches to correct these issues. After installing the
    updated packages, libvirtd will be restarted automatically.
    
    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
    https://access.redhat.com/articles/11258
    
    5. Bugs fixed (https://bugzilla.redhat.com/):
    
    1150379 - attempts to live snapshot merge (commit) of the active layer hang
    1160817 - CVE-2014-7823 libvirt: dumpxml: information leak with migratable flag
    1171124 - libvirtd occasionally crashes at the end of migration
    
    6. Package List:
    
    Red Hat Enterprise Linux Client (v. 7):
    
    Source:
    libvirt-1.1.1-29.el7_0.4.src.rpm
    
    x86_64:
    libvirt-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-client-1.1.1-29.el7_0.4.i686.rpm
    libvirt-client-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-config-network-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-config-nwfilter-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-driver-interface-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-driver-lxc-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-driver-network-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-driver-nodedev-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-driver-nwfilter-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-driver-qemu-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-driver-secret-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-driver-storage-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-kvm-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-debuginfo-1.1.1-29.el7_0.4.i686.rpm
    libvirt-debuginfo-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-python-1.1.1-29.el7_0.4.x86_64.rpm
    
    Red Hat Enterprise Linux Client Optional (v. 7):
    
    x86_64:
    libvirt-daemon-lxc-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-debuginfo-1.1.1-29.el7_0.4.i686.rpm
    libvirt-debuginfo-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-devel-1.1.1-29.el7_0.4.i686.rpm
    libvirt-devel-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-docs-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-lock-sanlock-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-login-shell-1.1.1-29.el7_0.4.x86_64.rpm
    
    Red Hat Enterprise Linux ComputeNode (v. 7):
    
    Source:
    libvirt-1.1.1-29.el7_0.4.src.rpm
    
    x86_64:
    libvirt-client-1.1.1-29.el7_0.4.i686.rpm
    libvirt-client-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-debuginfo-1.1.1-29.el7_0.4.i686.rpm
    libvirt-debuginfo-1.1.1-29.el7_0.4.x86_64.rpm
    
    Red Hat Enterprise Linux ComputeNode Optional (v. 7):
    
    x86_64:
    libvirt-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-config-network-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-config-nwfilter-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-driver-interface-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-driver-lxc-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-driver-network-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-driver-nodedev-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-driver-nwfilter-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-driver-qemu-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-driver-secret-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-driver-storage-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-kvm-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-lxc-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-debuginfo-1.1.1-29.el7_0.4.i686.rpm
    libvirt-debuginfo-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-devel-1.1.1-29.el7_0.4.i686.rpm
    libvirt-devel-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-docs-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-lock-sanlock-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-login-shell-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-python-1.1.1-29.el7_0.4.x86_64.rpm
    
    Red Hat Enterprise Linux Server (v. 7):
    
    Source:
    libvirt-1.1.1-29.el7_0.4.src.rpm
    
    ppc64:
    libvirt-1.1.1-29.el7_0.4.ppc64.rpm
    libvirt-client-1.1.1-29.el7_0.4.ppc.rpm
    libvirt-client-1.1.1-29.el7_0.4.ppc64.rpm
    libvirt-daemon-1.1.1-29.el7_0.4.ppc64.rpm
    libvirt-daemon-config-network-1.1.1-29.el7_0.4.ppc64.rpm
    libvirt-daemon-config-nwfilter-1.1.1-29.el7_0.4.ppc64.rpm
    libvirt-daemon-driver-interface-1.1.1-29.el7_0.4.ppc64.rpm
    libvirt-daemon-driver-lxc-1.1.1-29.el7_0.4.ppc64.rpm
    libvirt-daemon-driver-network-1.1.1-29.el7_0.4.ppc64.rpm
    libvirt-daemon-driver-nodedev-1.1.1-29.el7_0.4.ppc64.rpm
    libvirt-daemon-driver-nwfilter-1.1.1-29.el7_0.4.ppc64.rpm
    libvirt-daemon-driver-secret-1.1.1-29.el7_0.4.ppc64.rpm
    libvirt-daemon-driver-storage-1.1.1-29.el7_0.4.ppc64.rpm
    libvirt-debuginfo-1.1.1-29.el7_0.4.ppc.rpm
    libvirt-debuginfo-1.1.1-29.el7_0.4.ppc64.rpm
    libvirt-devel-1.1.1-29.el7_0.4.ppc.rpm
    libvirt-devel-1.1.1-29.el7_0.4.ppc64.rpm
    libvirt-docs-1.1.1-29.el7_0.4.ppc64.rpm
    libvirt-python-1.1.1-29.el7_0.4.ppc64.rpm
    
    s390x:
    libvirt-1.1.1-29.el7_0.4.s390x.rpm
    libvirt-client-1.1.1-29.el7_0.4.s390.rpm
    libvirt-client-1.1.1-29.el7_0.4.s390x.rpm
    libvirt-daemon-1.1.1-29.el7_0.4.s390x.rpm
    libvirt-daemon-config-network-1.1.1-29.el7_0.4.s390x.rpm
    libvirt-daemon-config-nwfilter-1.1.1-29.el7_0.4.s390x.rpm
    libvirt-daemon-driver-interface-1.1.1-29.el7_0.4.s390x.rpm
    libvirt-daemon-driver-lxc-1.1.1-29.el7_0.4.s390x.rpm
    libvirt-daemon-driver-network-1.1.1-29.el7_0.4.s390x.rpm
    libvirt-daemon-driver-nodedev-1.1.1-29.el7_0.4.s390x.rpm
    libvirt-daemon-driver-nwfilter-1.1.1-29.el7_0.4.s390x.rpm
    libvirt-daemon-driver-secret-1.1.1-29.el7_0.4.s390x.rpm
    libvirt-daemon-driver-storage-1.1.1-29.el7_0.4.s390x.rpm
    libvirt-debuginfo-1.1.1-29.el7_0.4.s390.rpm
    libvirt-debuginfo-1.1.1-29.el7_0.4.s390x.rpm
    libvirt-devel-1.1.1-29.el7_0.4.s390.rpm
    libvirt-devel-1.1.1-29.el7_0.4.s390x.rpm
    libvirt-docs-1.1.1-29.el7_0.4.s390x.rpm
    libvirt-python-1.1.1-29.el7_0.4.s390x.rpm
    
    x86_64:
    libvirt-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-client-1.1.1-29.el7_0.4.i686.rpm
    libvirt-client-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-config-network-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-config-nwfilter-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-driver-interface-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-driver-lxc-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-driver-network-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-driver-nodedev-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-driver-nwfilter-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-driver-qemu-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-driver-secret-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-driver-storage-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-kvm-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-debuginfo-1.1.1-29.el7_0.4.i686.rpm
    libvirt-debuginfo-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-devel-1.1.1-29.el7_0.4.i686.rpm
    libvirt-devel-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-docs-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-python-1.1.1-29.el7_0.4.x86_64.rpm
    
    Red Hat Enterprise Linux Server Optional (v. 7):
    
    ppc64:
    libvirt-daemon-lxc-1.1.1-29.el7_0.4.ppc64.rpm
    libvirt-debuginfo-1.1.1-29.el7_0.4.ppc64.rpm
    libvirt-login-shell-1.1.1-29.el7_0.4.ppc64.rpm
    
    s390x:
    libvirt-daemon-lxc-1.1.1-29.el7_0.4.s390x.rpm
    libvirt-debuginfo-1.1.1-29.el7_0.4.s390x.rpm
    libvirt-login-shell-1.1.1-29.el7_0.4.s390x.rpm
    
    x86_64:
    libvirt-daemon-lxc-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-debuginfo-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-lock-sanlock-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-login-shell-1.1.1-29.el7_0.4.x86_64.rpm
    
    Red Hat Enterprise Linux Workstation (v. 7):
    
    Source:
    libvirt-1.1.1-29.el7_0.4.src.rpm
    
    x86_64:
    libvirt-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-client-1.1.1-29.el7_0.4.i686.rpm
    libvirt-client-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-config-network-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-config-nwfilter-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-driver-interface-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-driver-lxc-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-driver-network-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-driver-nodedev-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-driver-nwfilter-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-driver-qemu-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-driver-secret-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-driver-storage-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-daemon-kvm-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-debuginfo-1.1.1-29.el7_0.4.i686.rpm
    libvirt-debuginfo-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-devel-1.1.1-29.el7_0.4.i686.rpm
    libvirt-devel-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-docs-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-python-1.1.1-29.el7_0.4.x86_64.rpm
    
    Red Hat Enterprise Linux Workstation Optional (v. 7):
    
    x86_64:
    libvirt-daemon-lxc-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-debuginfo-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-lock-sanlock-1.1.1-29.el7_0.4.x86_64.rpm
    libvirt-login-shell-1.1.1-29.el7_0.4.x86_64.rpm
    
    These packages are GPG signed by Red Hat for security.  Our key and
    details on how to verify the signature are available from
    https://access.redhat.com/security/team/key/
    
    7. References:
    
    https://access.redhat.com/security/cve/CVE-2014-7823
    https://access.redhat.com/security/updates/classification/#low
    
    8. Contact:
    
    The Red Hat security contact is . More contact
    details at https://access.redhat.com/security/team/contact/
    
    Copyright 2015 Red Hat, Inc.
    

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