Issued:
2013-02-21
Updated:
2013-02-21

RHSA-2013:0276 - Moderate: libvirt security, bug fix, and enhancement update

Synopsis

Moderate: libvirt security, bug fix, and enhancement update

Type/Severity

Security Advisory Moderate

Topic

Updated libvirt packages that fix one security issue, multiple bugs, and add various enhancements are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

Description

The libvirt library is a C API for managing and interacting with the virtualization capabilities of Linux and other operating systems. In addition, libvirt provides tools for remote management of virtualized systems.

It was discovered that libvirt made certain invalid assumptions about dnsmasq's command line options when setting up DNS masquerading for virtual machines, resulting in dnsmasq incorrectly processing network packets from network interfaces that were intended to be prohibited. This update includes the changes necessary to call dnsmasq with a new command line option, which was introduced to dnsmasq via RHSA-2013:0277. (CVE-2012-3411)

In order for libvirt to be able to make use of the new command line option (--bind-dynamic), updated dnsmasq packages need to be installed. Refer to RHSA-2013:0277 for additional information.

These updated libvirt packages include numerous bug fixes and enhancements. Space precludes documenting all of these changes in this advisory. Users are directed to the Red Hat Enterprise Linux 6.4 Technical Notes, linked to in the References, for information on the most significant of these changes.

All users of libvirt are advised to upgrade to these updated packages, which fix these issues and add these enhancements. After installing the updated packages, libvirtd must be restarted ("service libvirtd restart") for this update to take effect.

Solution

Before applying this update, make sure all previously-released errata relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258

Affected Products

ProductVersionArch
Red Hat Enterprise Linux for Scientific Computing6x86_64
Red Hat Enterprise Linux for Power, big endian6ppc64
Red Hat Enterprise Linux for IBM z Systems6s390x
Red Hat Enterprise Linux Workstation6x86_64
Red Hat Enterprise Linux Workstation6i386
Red Hat Enterprise Linux Server6x86_64
Red Hat Enterprise Linux Server6i386
Red Hat Enterprise Linux Server from RHUI6x86_64
Red Hat Enterprise Linux Server from RHUI6i386
Red Hat Enterprise Linux Server - Retired Extended Life Cycle Support6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension (for IBM z Systems)6s390x
Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems)6s390x
Red Hat Enterprise Linux Desktop6x86_64
Red Hat Enterprise Linux Desktop6i386

Updated Packages

  • libvirt-devel-0.10.2-18.el6.i686.rpm
  • libvirt-devel-0.10.2-18.el6.ppc.rpm
  • libvirt-client-0.10.2-18.el6.s390.rpm
  • libvirt-0.10.2-18.el6.s390x.rpm
  • libvirt-client-0.10.2-18.el6.ppc64.rpm
  • libvirt-devel-0.10.2-18.el6.s390x.rpm
  • libvirt-client-0.10.2-18.el6.ppc.rpm
  • libvirt-python-0.10.2-18.el6.x86_64.rpm
  • libvirt-lock-sanlock-0.10.2-18.el6.x86_64.rpm
  • libvirt-debuginfo-0.10.2-18.el6.ppc64.rpm
  • libvirt-python-0.10.2-18.el6.i686.rpm
  • libvirt-devel-0.10.2-18.el6.ppc64.rpm
  • libvirt-0.10.2-18.el6.i686.rpm
  • libvirt-0.10.2-18.el6.ppc64.rpm
  • libvirt-client-0.10.2-18.el6.i686.rpm
  • libvirt-0.10.2-18.el6.x86_64.rpm
  • libvirt-debuginfo-0.10.2-18.el6.s390.rpm
  • libvirt-client-0.10.2-18.el6.s390x.rpm
  • libvirt-debuginfo-0.10.2-18.el6.x86_64.rpm
  • libvirt-0.10.2-18.el6.src.rpm
  • libvirt-devel-0.10.2-18.el6.s390.rpm
  • libvirt-debuginfo-0.10.2-18.el6.s390x.rpm
  • libvirt-python-0.10.2-18.el6.s390x.rpm
  • libvirt-client-0.10.2-18.el6.x86_64.rpm
  • libvirt-python-0.10.2-18.el6.ppc64.rpm
  • libvirt-devel-0.10.2-18.el6.x86_64.rpm
  • libvirt-debuginfo-0.10.2-18.el6.i686.rpm
  • libvirt-debuginfo-0.10.2-18.el6.ppc.rpm

Fixes

CVEs

References

Additional information