Ubuntu 3826-1: QEMU vulnerabilities

    Date26 Nov 2018
    CategoryUbuntu
    1577
    Posted ByAnthony Pell
    Several security issues were fixed in QEMU.
    ==========================================================================
    Ubuntu Security Notice USN-3826-1
    November 26, 2018
    
    qemu vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 18.10
    - Ubuntu 18.04 LTS
    - Ubuntu 16.04 LTS
    - Ubuntu 14.04 LTS
    
    Summary:
    
    Several security issues were fixed in QEMU.
    
    Software Description:
    - qemu: Machine emulator and virtualizer
    
    Details:
    
    Daniel Shapira and Arash Tohidi discovered that QEMU incorrectly handled
    NE2000 device emulation. An attacker inside the guest could use this issue
    to cause QEMU to crash, resulting in a denial of service. (CVE-2018-10839)
    
    It was discovered that QEMU incorrectly handled the Slirp networking
    back-end. A privileged attacker inside the guest could use this issue to
    cause QEMU to crash, resulting in a denial of service, or possibly execute
    arbitrary code on the host. In the default installation, when QEMU is used
    with libvirt, attackers would be isolated by the libvirt AppArmor profile.
    This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu
    18.04 LTS. (CVE-2018-11806)
    
    Fakhri Zulkifli discovered that the QEMU guest agent incorrectly handled
    certain QMP commands. An attacker could possibly use this issue to crash
    the QEMU guest agent, resulting in a denial of service. (CVE-2018-12617)
    
    Li Qiang discovered that QEMU incorrectly handled NVM Express Controller
    emulation. An attacker inside the guest could use this issue to cause QEMU
    to crash, resulting in a denial of service, or possibly execute arbitrary
    code on the host. In the default installation, when QEMU is used with
    libvirt, attackers would be isolated by the libvirt AppArmor profile. This
    issue only affected Ubuntu 18.04 LTS and Ubuntu 18.10. (CVE-2018-16847)
    
    Daniel Shapira and Arash Tohidi discovered that QEMU incorrectly handled
    RTL8139 device emulation. An attacker inside the guest could use this issue
    to cause QEMU to crash, resulting in a denial of service. (CVE-2018-17958)
    
    Daniel Shapira and Arash Tohidi discovered that QEMU incorrectly handled
    PCNET device emulation. An attacker inside the guest could use this issue
    to cause QEMU to crash, resulting in a denial of service. (CVE-2018-17962)
    
    Daniel Shapira discovered that QEMU incorrectly handled large packet sizes.
    An attacker inside the guest could use this issue to cause QEMU to crash,
    resulting in a denial of service. (CVE-2018-17963)
    
    It was discovered that QEMU incorrectly handled LSI53C895A device
    emulation. An attacker inside the guest could use this issue to cause QEMU
    to crash, resulting in a denial of service. (CVE-2018-18849)
    
    Moguofang discovered that QEMU incorrectly handled the IPowerNV LPC
    controller. An attacker inside the guest could use this issue to cause QEMU
    to crash, resulting in a denial of service. This issue only affected Ubuntu
    18.04 LTS and Ubuntu 18.10. (CVE-2018-18954)
    
    Zhibin Hu discovered that QEMU incorrectly handled the Plan 9 File System
    support. An attacker inside the guest could use this issue to cause QEMU
    to crash, resulting in a denial of service. (CVE-2018-19364)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 18.10:
      qemu-system                     1:2.12+dfsg-3ubuntu8.1
      qemu-system-arm                 1:2.12+dfsg-3ubuntu8.1
      qemu-system-mips                1:2.12+dfsg-3ubuntu8.1
      qemu-system-misc                1:2.12+dfsg-3ubuntu8.1
      qemu-system-ppc                 1:2.12+dfsg-3ubuntu8.1
      qemu-system-s390x               1:2.12+dfsg-3ubuntu8.1
      qemu-system-sparc               1:2.12+dfsg-3ubuntu8.1
      qemu-system-x86                 1:2.12+dfsg-3ubuntu8.1
    
    Ubuntu 18.04 LTS:
      qemu-system                     1:2.11+dfsg-1ubuntu7.8
      qemu-system-arm                 1:2.11+dfsg-1ubuntu7.8
      qemu-system-mips                1:2.11+dfsg-1ubuntu7.8
      qemu-system-misc                1:2.11+dfsg-1ubuntu7.8
      qemu-system-ppc                 1:2.11+dfsg-1ubuntu7.8
      qemu-system-s390x               1:2.11+dfsg-1ubuntu7.8
      qemu-system-sparc               1:2.11+dfsg-1ubuntu7.8
      qemu-system-x86                 1:2.11+dfsg-1ubuntu7.8
    
    Ubuntu 16.04 LTS:
      qemu-system                     1:2.5+dfsg-5ubuntu10.33
      qemu-system-aarch64             1:2.5+dfsg-5ubuntu10.33
      qemu-system-arm                 1:2.5+dfsg-5ubuntu10.33
      qemu-system-mips                1:2.5+dfsg-5ubuntu10.33
      qemu-system-misc                1:2.5+dfsg-5ubuntu10.33
      qemu-system-ppc                 1:2.5+dfsg-5ubuntu10.33
      qemu-system-s390x               1:2.5+dfsg-5ubuntu10.33
      qemu-system-sparc               1:2.5+dfsg-5ubuntu10.33
      qemu-system-x86                 1:2.5+dfsg-5ubuntu10.33
    
    Ubuntu 14.04 LTS:
      qemu-system                     2.0.0+dfsg-2ubuntu1.44
      qemu-system-aarch64             2.0.0+dfsg-2ubuntu1.44
      qemu-system-arm                 2.0.0+dfsg-2ubuntu1.44
      qemu-system-mips                2.0.0+dfsg-2ubuntu1.44
      qemu-system-misc                2.0.0+dfsg-2ubuntu1.44
      qemu-system-ppc                 2.0.0+dfsg-2ubuntu1.44
      qemu-system-sparc               2.0.0+dfsg-2ubuntu1.44
      qemu-system-x86                 2.0.0+dfsg-2ubuntu1.44
    
    After a standard system update you need to restart all QEMU virtual
    machines to make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/usn/usn-3826-1
      CVE-2018-10839, CVE-2018-11806, CVE-2018-12617, CVE-2018-16847,
      CVE-2018-17958, CVE-2018-17962, CVE-2018-17963, CVE-2018-18849,
      CVE-2018-18954, CVE-2018-19364
    
    Package Information:
      https://launchpad.net/ubuntu/+source/qemu/1:2.12+dfsg-3ubuntu8.1
      https://launchpad.net/ubuntu/+source/qemu/1:2.11+dfsg-1ubuntu7.8
      https://launchpad.net/ubuntu/+source/qemu/1:2.5+dfsg-5ubuntu10.33
      https://launchpad.net/ubuntu/+source/qemu/2.0.0+dfsg-2ubuntu1.44
    
    
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