Ubuntu 2439-1: QEMU vulnerabilities

    Date11 Dec 2014
    CategoryUbuntu
    49
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in QEMU.
    ==========================================================================
    Ubuntu Security Notice USN-2439-1
    December 11, 2014
    
    qemu, qemu-kvm vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 14.10
    - Ubuntu 14.04 LTS
    - Ubuntu 12.04 LTS
    - Ubuntu 10.04 LTS
    
    Summary:
    
    Several security issues were fixed in QEMU.
    
    Software Description:
    - qemu: Machine emulator and virtualizer
    - qemu-kvm: Machine emulator and virtualizer
    
    Details:
    
    Michael S. Tsirkin discovered that QEMU incorrectly handled certain
    parameters during ram load while performing a migration. An attacker able
    to manipulate savevm data could use this issue to possibly execute
    arbitrary code on the host. This issue only affected Ubuntu 12.04 LTS,
    Ubuntu 14.04 LTS, and Ubuntu 14.10. (CVE-2014-7840)
    
    Paolo Bonzini discovered that QEMU incorrectly handled memory in the Cirrus
    VGA device. A malicious guest could possibly use this issue to write into
    memory of the host, leading to privilege escalation. (CVE-2014-8106)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 14.10:
      qemu-system                     2.1+dfsg-4ubuntu6.3
      qemu-system-aarch64             2.1+dfsg-4ubuntu6.3
      qemu-system-arm                 2.1+dfsg-4ubuntu6.3
      qemu-system-mips                2.1+dfsg-4ubuntu6.3
      qemu-system-misc                2.1+dfsg-4ubuntu6.3
      qemu-system-ppc                 2.1+dfsg-4ubuntu6.3
      qemu-system-sparc               2.1+dfsg-4ubuntu6.3
      qemu-system-x86                 2.1+dfsg-4ubuntu6.3
    
    Ubuntu 14.04 LTS:
      qemu-system                     2.0.0+dfsg-2ubuntu1.9
      qemu-system-aarch64             2.0.0+dfsg-2ubuntu1.9
      qemu-system-arm                 2.0.0+dfsg-2ubuntu1.9
      qemu-system-mips                2.0.0+dfsg-2ubuntu1.9
      qemu-system-misc                2.0.0+dfsg-2ubuntu1.9
      qemu-system-ppc                 2.0.0+dfsg-2ubuntu1.9
      qemu-system-sparc               2.0.0+dfsg-2ubuntu1.9
      qemu-system-x86                 2.0.0+dfsg-2ubuntu1.9
    
    Ubuntu 12.04 LTS:
      qemu-kvm                        1.0+noroms-0ubuntu14.21
    
    Ubuntu 10.04 LTS:
      qemu-kvm                        0.12.3+noroms-0ubuntu9.26
    
    After a standard system update you need to reboot your computer to make
    all the necessary changes.
    
    References:
      http://www.ubuntu.com/usn/usn-2439-1
      CVE-2014-7840, CVE-2014-8106
    
    Package Information:
      https://launchpad.net/ubuntu/+source/qemu/2.1+dfsg-4ubuntu6.3
      https://launchpad.net/ubuntu/+source/qemu/2.0.0+dfsg-2ubuntu1.9
      https://launchpad.net/ubuntu/+source/qemu-kvm/1.0+noroms-0ubuntu14.21
      https://launchpad.net/ubuntu/+source/qemu-kvm/0.12.3+noroms-0ubuntu9.26
    
    
    
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