USN-1708-1: libvirt vulnerabilities

29 January 2013

libvirt vulnerabilities

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

  • Ubuntu 12.10
  • Ubuntu 12.04 LTS

Summary

libvirt could be made to crash or run programs if it received specially crafted network traffic.

Software Description

  • libvirt - Libvirt virtualization toolkit

Details

Wenlong Huang discovered that libvirt incorrectly handled certain RPC calls. A remote attacker could exploit this and cause libvirt to crash, resulting in a denial of service. This issue only affected Ubuntu 12.04 LTS. (CVE-2012-4423)

Tingting Zheng discovered that libvirt incorrectly handled cleanup under certain error conditions. A remote attacker could exploit this and cause libvirt to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2013-0170)

Update instructions

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

Ubuntu 12.10
libvirt-bin - 0.9.13-0ubuntu12.2
libvirt0 - 0.9.13-0ubuntu12.2
Ubuntu 12.04 LTS
libvirt-bin - 0.9.8-2ubuntu17.7
libvirt0 - 0.9.8-2ubuntu17.7

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