=========================================================================Ubuntu Security Notice USN-1708-1
January 29, 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
After a standard system update you need to reboot your computer to make
all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-1708-1
CVE-2012-4423, CVE-2013-0170
Package Information:
https://launchpad.net/ubuntu/+source/libvirt/0.9.13-0ubuntu12.2
https://launchpad.net/ubuntu/+source/libvirt/0.9.8-2ubuntu17.7