Debian: DSA-3038-1: libvirt security update

    Date27 Sep 2014
    CategoryDebian
    52
    Posted ByLinuxSecurity Advisories
    Several vulnerabilities were discovered in Libvirt, a virtualisation abstraction library. The Common Vulnerabilities and Exposures project identifies the following problems:
    
    - -------------------------------------------------------------------------
    Debian Security Advisory DSA-3038-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
    	
    http://www.debian.org/security/                      Salvatore Bonaccorso
    September 27, 2014                     http://www.debian.org/security/faq
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    Package        : libvirt
    CVE ID         : CVE-2014-0179 CVE-2014-3633
    Debian Bug     : 762203
    
    Several vulnerabilities were discovered in Libvirt, a virtualisation
    abstraction library. The Common Vulnerabilities and Exposures project
    identifies the following problems:
    
    CVE-2014-0179
    
        Richard Jones and Daniel P. Berrange found that libvirt passes the
        XML_PARSE_NOENT flag when parsing XML documents using the libxml2
        library, in which case all XML entities in the parsed documents are
        expanded. A user able to force libvirtd to parse an XML document
        with an entity pointing to a special file that blocks on read access
        could use this flaw to cause libvirtd to hang indefinitely,
        resulting in a denial of service on the system.
    
    CVE-2014-3633
    
        Luyao Huang of Red Hat found that the qemu implementation of
        virDomainGetBlockIoTune computed an index into the array of disks
        for the live definition, then used it as the index into the array of
        disks for the persistent definition, which could result into an
        out-of-bounds read access in qemuDomainGetBlockIoTune().
    
        A remote attacker able to establish a read-only connection to
        libvirtd could use this flaw to crash libvirtd or, potentially, leak
        memory from the libvirtd process.
    
    For the stable distribution (wheezy), these problems have been fixed in
    version 0.9.12.3-1+deb7u1.
    
    For the unstable distribution (sid), these problems have been fixed in
    version 1.2.8-2.
    
    We recommend that you upgrade your libvirt packages.
    
    Further information about Debian Security Advisories, how to apply
    these updates to your system and frequently asked questions can be
    found at: https://www.debian.org/security/
    
    Mailing list: This email address is being protected from spambots. You need JavaScript enabled to view it.
    
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