USN-2404-1: libvirt vulnerabilities

Ubuntu Security Notice USN-2404-1

11th November, 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 version:

Ubuntu 14.10:
libvirt0

1.2.8-0ubuntu11.1
libvirt-bin

1.2.8-0ubuntu11.1
Ubuntu 14.04 LTS:
libvirt0

1.2.2-0ubuntu13.1.7
libvirt-bin

1.2.2-0ubuntu13.1.7

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

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

References

CVE-2014-3657,

CVE-2014-7823

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