Moderate CentOS libvirt Update

Metadata

medium
5.0
libvirt-0.9.10-21.el6_3.5.i686.rpm, libvirt-0.9.10-21.el6_3.5.src.rpm, libvirt-0.9.10-21.el6_3.5.x86_64.rpm, libvirt-client-0.9.10-21.el6_3.5.i686.rpm, libvirt-client-0.9.10-21.el6_3.5.x86_64.rpm, libvirt-devel-0.9.10-21.el6_3.5.i686.rpm, libvirt-devel-0.9.10-21.el6_3.5.x86_64.rpm, libvirt-lock-sanlock-0.9.10-21.el6_3.5.x86_64.rpm, libvirt-python-0.9.10-21.el6_3.5.i686.rpm, libvirt-python-0.9.10-21.el6_3.5.x86_64.rpm
CVE-2012-4423
rhn.redhat.com, lists.centos.org
2012-10-11
2017-07-27 19:04
CVE-2012-4423 libvirt
CVE-2012-4423
2017-04-01 19:06
2017-01-05 20:10

Description


Updated libvirt packages that fix one security issue and multiple bugs 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.

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 use this flaw to crash
libvirtd by sending an RPC message that has an event as the RPC number, or
an RPC number that falls into a gap in the RPC dispatch table.
(CVE-2012-4423)

This issue was discovered by Wenlong Huang of the Red Hat Virtualization QE
Team.

This update also fixes the following bugs:

* When the host_uuid option was present in the libvirtd.conf file, the
augeas libvirt lens was unable to parse the file. This bug has been fixed
and the augeas libvirt lens now parses libvirtd.conf as expected in the
described scenario. (BZ#858988)

* Disk hot plug is a two-part action: the qemuMonitorAddDrive() call is
followed by the qemuMonitorAddDevice() call. When the first part succeeded
but the second one failed, libvirt failed to roll back the first part and
the device remained in use even though the disk hot plug failed. With this
update, the rollback for the drive addition is properly performed in the
described scenario and disk hot plug now works as expected. (BZ#859376)

* When a virtual machine was started with an image chain using block
devices and a block rebase operation was issued, the operation failed on
completion in the blockJobAbort() function. This update relabels and
configures cgroups for the backing files and the rebase operation now
succeeds. (BZ#860720)

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.
Please see https://www.redhat.com/footer/terms-of-use.html

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Affected package information

Release Package Patched in
6 libvirt libvirt-0.9.10-21.el6_3.5.i686.rpm
libvirt libvirt-0.9.10-21.el6_3.5.src.rpm
libvirt libvirt-0.9.10-21.el6_3.5.x86_64.rpm
libvirt-client libvirt-client-0.9.10-21.el6_3.5.i686.rpm
libvirt-client libvirt-client-0.9.10-21.el6_3.5.x86_64.rpm
libvirt-devel libvirt-devel-0.9.10-21.el6_3.5.i686.rpm
libvirt-devel libvirt-devel-0.9.10-21.el6_3.5.x86_64.rpm
libvirt-lock-sanlock libvirt-lock-sanlock-0.9.10-21.el6_3.5.x86_64.rpm
libvirt-python libvirt-python-0.9.10-21.el6_3.5.i686.rpm
libvirt-python libvirt-python-0.9.10-21.el6_3.5.x86_64.rpm