[USN-2404-1] libvirt vulnerabilities

Marc Deslauriers marc.deslauriers at canonical.com
Tue Nov 11 16:55:09 UTC 2014


==========================================================================
Ubuntu Security Notice USN-2404-1
November 11, 2014

libvirt vulnerabilities
==========================================================================

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

- Ubuntu 14.10
- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in libvirt.

Software Description:
- libvirt: Libvirt virtualization toolkit

Details:

Pavel Hrdina discovered that libvirt incorrectly handled locking when
processing the virConnectListAllDomains command. An attacker could use this
issue to cause libvirtd to hang, resulting in a denial of service.
(CVE-2014-3657)

Eric Blake discovered that libvirt incorrectly handled permissions when
processing the qemuDomainFormatXML command. An attacker with read-only
privileges could possibly use this to gain access to certain information
from the domain xml file. (CVE-2014-7823)

Update instructions:

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

Ubuntu 14.10:
  libvirt-bin                     1.2.8-0ubuntu11.1
  libvirt0                        1.2.8-0ubuntu11.1

Ubuntu 14.04 LTS:
  libvirt-bin                     1.2.2-0ubuntu13.1.7
  libvirt0                        1.2.2-0ubuntu13.1.7

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

References:
  http://www.ubuntu.com/usn/usn-2404-1
  CVE-2014-3657, CVE-2014-7823

Package Information:
  https://launchpad.net/ubuntu/+source/libvirt/1.2.8-0ubuntu11.1
  https://launchpad.net/ubuntu/+source/libvirt/1.2.2-0ubuntu13.1.7


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