Synopsis:    Moderate: libvirt security and bug fix update
Issue Date:  2012-08-23
CVE Numbers: CVE-2012-3445


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.

A flaw was found in libvirtd's RPC call handling. An attacker able to
establish a read-only connection to libvirtd could trigger this flaw with a
specially-crafted RPC command that has the number of parameters set to 0,
causing libvirtd to access invalid memory and crash. (CVE-2012-3445)

This update also fixes the following bugs:

* Previously, repeatedly migrating a guest between two machines while using
the tunnelled migration could cause the libvirt daemon to lock up
unexpectedly. The bug in the code for locking remote drivers has been fixed
and repeated tunnelled migrations of domains now work as expected.

* Previously, when certain system locales were used by the system, libvirt
could issue incorrect commands to the hypervisor. This bug has been fixed
and the libvirt library and daemon are no longer affected by the choice of
the user locale.

All users of libvirt are advised to upgrade to these updated packages,
which contain backported patches to correct these issues. After installing
the updated packages, libvirtd will be restarted automatically.

SL6:
   i386
      libvirt-0.9.10-21.el6_3.4.i686.rpm
      libvirt-client-0.9.10-21.el6_3.4.i686.rpm
      libvirt-debuginfo-0.9.10-21.el6_3.4.i686.rpm
      libvirt-devel-0.9.10-21.el6_3.4.i686.rpm
      libvirt-python-0.9.10-21.el6_3.4.i686.rpm
   x86_64
      libvirt-0.9.10-21.el6_3.4.x86_64.rpm
      libvirt-client-0.9.10-21.el6_3.4.i686.rpm
      libvirt-client-0.9.10-21.el6_3.4.x86_64.rpm
      libvirt-debuginfo-0.9.10-21.el6_3.4.i686.rpm
      libvirt-debuginfo-0.9.10-21.el6_3.4.x86_64.rpm
      libvirt-devel-0.9.10-21.el6_3.4.i686.rpm
      libvirt-devel-0.9.10-21.el6_3.4.x86_64.rpm
      libvirt-lock-sanlock-0.9.10-21.el6_3.4.x86_64.rpm
      libvirt-python-0.9.10-21.el6_3.4.x86_64.rpm

- Scientific Linux Development Team