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             AUSCERT External Security Bulletin Redistribution

                     USN-2409-1: QEMU vulnerabilities
                             17 November 2014


        AusCERT Security Bulletin Summary

Product:           qemu
Publisher:         Ubuntu
Operating System:  Ubuntu
                   Linux variants
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
                   Increased Privileges            -- Existing Account      
                   Access Privileged Data          -- Existing Account      
                   Denial of Service               -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2014-7815 CVE-2014-5388 CVE-2014-5263
                   CVE-2014-3689 CVE-2014-3640 CVE-2014-3615

Reference:         ESB-2014.2062

Original Bulletin: 

Comment: This advisory references vulnerabilities in products which run on 
         platforms other than Ubuntu. It is recommended that administrators 
         running qemu or qemu-kvm check for an updated version of the 
         software for their operating system.

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USN-2409-1: QEMU vulnerabilities

Ubuntu Security Notice USN-2409-1

13th November, 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


Several security issues were fixed in QEMU.
Software description

    qemu - Machine emulator and virtualizer
    qemu-kvm - Machine emulator and virtualizer


Laszlo Ersek discovered that QEMU incorrectly handled memory in the vga
device. A malicious guest could possibly use this issue to read arbitrary
host memory. This issue only affected Ubuntu 14.04 LTS and Ubuntu 14.10.

Xavier Mehrenberger and Stephane Duverger discovered that QEMU incorrectly
handled certain udp packets when using guest networking. A malicious guest
could possibly use this issue to cause a denial of service. (CVE-2014-3640)

It was discovered that QEMU incorrectly handled parameter validation in
the vmware_vga device. A malicious guest could possibly use this issue to
write into memory of the host, leading to privilege escalation.

It was discovered that QEMU incorrectly handled USB xHCI controller live
migration. An attacker could possibly use this issue to cause a denial of
service, or possibly execute arbitrary code. This issue only affected
Ubuntu 14.04 LTS. (CVE-2014-5263)

Michael S. Tsirkin discovered that QEMU incorrectly handled memory in the
ACPI PCI hotplug interface. A malicious guest could possibly use this issue
to access memory of the host, leading to information disclosure or
privilege escalation. This issue only affected Ubuntu 14.04 LTS.

James Spadaro discovered that QEMU incorrectly handled certain VNC
bytes_per_pixel values. An attacker having access to a VNC console could
possibly use this issue to cause a guest to crash, resulting in a denial of
service. (CVE-2014-7815)

Update instructions

The problem can be corrected by updating your system to the following package 

Ubuntu 14.10:
    qemu-system-misc 2.1+dfsg-4ubuntu6.1 
    qemu-system 2.1+dfsg-4ubuntu6.1 
    qemu-system-aarch64 2.1+dfsg-4ubuntu6.1 
    qemu-system-x86 2.1+dfsg-4ubuntu6.1 
    qemu-system-sparc 2.1+dfsg-4ubuntu6.1 
    qemu-system-arm 2.1+dfsg-4ubuntu6.1 
    qemu-system-ppc 2.1+dfsg-4ubuntu6.1 
    qemu-system-mips 2.1+dfsg-4ubuntu6.1 
Ubuntu 14.04 LTS:
    qemu-system-misc 2.0.0+dfsg-2ubuntu1.7 
    qemu-system 2.0.0+dfsg-2ubuntu1.7 
    qemu-system-aarch64 2.0.0+dfsg-2ubuntu1.7 
    qemu-system-x86 2.0.0+dfsg-2ubuntu1.7 
    qemu-system-sparc 2.0.0+dfsg-2ubuntu1.7 
    qemu-system-arm 2.0.0+dfsg-2ubuntu1.7 
    qemu-system-ppc 2.0.0+dfsg-2ubuntu1.7 
    qemu-system-mips 2.0.0+dfsg-2ubuntu1.7 
Ubuntu 12.04 LTS:
    qemu-kvm 1.0+noroms-0ubuntu14.19 
Ubuntu 10.04 LTS:
    qemu-kvm 0.12.3+noroms-0ubuntu9.25 

To update your system, please follow these instructions: 

After a standard system update you need to reboot your computer to make
all the necessary changes.


CVE-2014-3615, CVE-2014-3640, CVE-2014-3689, CVE-2014-5263, CVE-2014-5388, 

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