Ubuntu 1145-1: QEMU vulnerabilities

    Date10 Jun 2011
    CategoryUbuntu
    44
    Posted ByLinuxSecurity Advisories
    A privileged attacker within a QEMU guest could cause QEMU to crash.
    ==========================================================================
    Ubuntu Security Notice USN-1145-1
    June 09, 2011
    
    qemu-kvm vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 11.04
    - Ubuntu 10.10
    - Ubuntu 10.04 LTS
    
    Summary:
    
    A privileged attacker within a QEMU guest could cause QEMU to crash.
    
    Software Description:
    - qemu-kvm: Machine emulator and virtualizer
    
    Details:
    
    It was discovered that QEMU did not properly perform validation of I/O
    operations from the guest which could lead to heap corruption. An attacker
    could exploit this to cause a denial of service of the guest or possibly
    execute code with the privileges of the user invoking the program.
    (CVE-2011-1750)
    
    Nelson Elhage discoverd that QEMU did not properly handle memory when
    removing ISA devices. An attacker could exploit this to cause a denial of
    service of the guest or possibly execute code with the privileges of the
    user invoking the program. (CVE-2011-1751)
    
    When using QEMU with libvirt or virtualization management software based on
    libvirt such as Eucalyptus and OpenStack, QEMU guests are individually isolated
    by an AppArmor profile by default in Ubuntu.
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 11.04:
      qemu-kvm                        0.14.0+noroms-0ubuntu4.1
    
    Ubuntu 10.10:
      qemu-kvm                        0.12.5+noroms-0ubuntu7.5
      qemu-kvm-extras                 0.12.5+noroms-0ubuntu7.5
      qemu-kvm-extras-static          0.12.5+noroms-0ubuntu7.5
    
    Ubuntu 10.04 LTS:
      qemu-kvm                        0.12.3+noroms-0ubuntu9.9
      qemu-kvm-extras                 0.12.3+noroms-0ubuntu9.9
      qemu-kvm-extras-static          0.12.3+noroms-0ubuntu9.9
    
    After a standard system update you need to restart running virtual machines
    to make all the necessary changes.
    
    References:
      CVE-2011-1750, CVE-2011-1751
    
    Package Information:
      https://launchpad.net/ubuntu/+source/qemu-kvm/0.14.0+noroms-0ubuntu4.1
      https://launchpad.net/ubuntu/+source/qemu-kvm/0.12.5+noroms-0ubuntu7.5
      https://launchpad.net/ubuntu/+source/qemu-kvm/0.12.3+noroms-0ubuntu9.9
    
    
    
    You are not authorised to post comments.

    Comments powered by CComment

    LinuxSecurity Poll

    What do you think of the articles on LinuxSecurity?

    No answer selected. Please try again.
    Please select either existing option or enter your own, however not both.
    Please select minimum 0 answer(s) and maximum 3 answer(s).
    /main-polls/24-what-do-you-think-of-the-quality-of-the-articles-on-linuxsecurity?task=poll.vote&format=json
    24
    radio
    [{"id":"87","title":"Excellent, don't change a thing!","votes":"25","type":"x","order":"1","pct":54.35,"resources":[]},{"id":"88","title":"Should be more technical","votes":"5","type":"x","order":"2","pct":10.87,"resources":[]},{"id":"89","title":"Should include more HOWTOs","votes":"16","type":"x","order":"3","pct":34.78,"resources":[]}]["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"]["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"]350
    bottom200

    We use cookies to provide and improve our services. By using our site, you consent to our Cookie Policy.