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Ubuntu 12.04 LTS USN-1708-1 Critical: libvirt Network Threats

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Calendar Grey January 29, 2013
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Important Ubuntu Security Advisory USN-1708-2 emphasizes vulnerabilities in libvirt that could lead to system crashes and possible attacks.
libvirt could be made to crash or run programs if it received specially crafted network traffic.

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)

Topics%20covered

Topics Covered

security advisory denial of service ubuntu network threat libvirt

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

Severity
critical
Lowest
Low
Medium
High
Critical

January 29, 2013

Topics%20covered

Topics Covered

security advisory denial of service ubuntu network threat libvirt

Package Information

https://launchpad.net/ubuntu/+source/libvirt/0.9.13-0ubuntu12.2
https://launchpad.net/ubuntu/+source/libvirt/0.9.8-2ubuntu17.7

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