USN-2404-1: libvirt vulnerabilities

11 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 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

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