============================================================================
Ubuntu Security Notice USN-2342-1
September 08, 2014

qemu, qemu-kvm vulnerabilities
============================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- 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, Anthony Liguori, and Michael Roth discovered multiple
issues with QEMU state loading after migration. An attacker able to modify
the state data could use these issues to cause a denial of service, or
possibly execute arbitrary code. (CVE-2013-4148, CVE-2013-4149,
CVE-2013-4150, CVE-2013-4151, CVE-2013-4526, CVE-2013-4527, CVE-2013-4529,
CVE-2013-4530, CVE-2013-4531, CVE-2013-4532, CVE-2013-4533, CVE-2013-4534,
CVE-2013-4535, CVE-2013-4536, CVE-2013-4537, CVE-2013-4538, CVE-2013-4539,
CVE-2013-4540, CVE-2013-4541, CVE-2013-4542, CVE-2013-6399, CVE-2014-0182,
CVE-2014-3461)

Kevin Wolf, Stefan Hajnoczi, Fam Zheng, Jeff Cody, Stefan Hajnoczi, and
others discovered multiple issues in the QEMU block drivers. An attacker
able to modify disk images could use these issues to cause a denial of
service, or possibly execute arbitrary code. (CVE-2014-0142, CVE-2014-0143,
CVE-2014-0144, CVE-2014-0145, CVE-2014-0146, CVE-2014-0147, CVE-2014-0222,
CVE-2014-0223)

It was discovered that QEMU incorrectly handled certain PCIe bus hotplug
operations. A malicious guest could use this issue to crash the QEMU host,
resulting in a denial of service. (CVE-2014-3471)

Update instructions:

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

Ubuntu 14.04 LTS:
  qemu-system                     2.0.0+dfsg-2ubuntu1.3
  qemu-system-aarch64             2.0.0+dfsg-2ubuntu1.3
  qemu-system-arm                 2.0.0+dfsg-2ubuntu1.3
  qemu-system-mips                2.0.0+dfsg-2ubuntu1.3
  qemu-system-misc                2.0.0+dfsg-2ubuntu1.3
  qemu-system-ppc                 2.0.0+dfsg-2ubuntu1.3
  qemu-system-sparc               2.0.0+dfsg-2ubuntu1.3
  qemu-system-x86                 2.0.0+dfsg-2ubuntu1.3

Ubuntu 12.04 LTS:
  qemu-kvm                        1.0+noroms-0ubuntu14.17

Ubuntu 10.04 LTS:
  qemu-kvm                        0.12.3+noroms-0ubuntu9.24

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

References:
  http://www.ubuntu.com/usn/usn-2342-1
  CVE-2013-4148, CVE-2013-4149, CVE-2013-4150, CVE-2013-4151,
  CVE-2013-4526, CVE-2013-4527, CVE-2013-4529, CVE-2013-4530,
  CVE-2013-4531, CVE-2013-4532, CVE-2013-4533, CVE-2013-4534,
  CVE-2013-4535, CVE-2013-4536, CVE-2013-4537, CVE-2013-4538,
  CVE-2013-4539, CVE-2013-4540, CVE-2013-4541, CVE-2013-4542,
  CVE-2013-6399, CVE-2014-0142, CVE-2014-0143, CVE-2014-0144,
  CVE-2014-0145, CVE-2014-0146, CVE-2014-0147, CVE-2014-0182,
  CVE-2014-0222, CVE-2014-0223, CVE-2014-3461, CVE-2014-3471

Package Information:
  https://launchpad.net/ubuntu/+source/qemu/2.0.0+dfsg-2ubuntu1.3
  https://launchpad.net/ubuntu/+source/qemu-kvm/1.0+noroms-0ubuntu14.17
  https://launchpad.net/ubuntu/+source/qemu-kvm/0.12.3+noroms-0ubuntu9.24