[RHSA-2012:1359-01] Moderate: libvirt security and bug fix update

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Red Hat Security Advisory

 

Synopsis: Moderate: libvirt security and bug fix update

Advisory ID: RHSA-2012:1359-01

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2012-1359.html

Issue date: 2012-10-11

CVE Names: CVE-2012-4423

=====================================================================

 

1. Summary:

 

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.

 

2. Relevant releases/architectures:

 

Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64

Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64

Red Hat Enterprise Linux HPC Node (v. 6) - x86_64

Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64

Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 6) - x86_64

Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

Red Hat Enterprise Linux Workstation Optional (v. 6) - x86_64

 

3. 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.

 

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.

 

4. 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

 

5. Bugs fixed (http://bugzilla.redhat.com/):

 

857133 - CVE-2012-4423 libvirt: null function pointer invocation in virNetServerProgramDispatchCall()

858988 - The libvirt augeas lens can't parse a libvirtd.conf file where host_uuid is present

859376 - after failed hotplug qemu keeps the file descriptor open

860720 - Relabel and configure cgroups for the backing files on VIR_DOMAIN_BLOCK_JOB_ABORT_PIVOT

 

6. Package List:

 

Red Hat Enterprise Linux Desktop (v. 6):

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/libvirt-0.9.10-21.el6_3.5.src.rpm

 

i386:

libvirt-0.9.10-21.el6_3.5.i686.rpm

libvirt-client-0.9.10-21.el6_3.5.i686.rpm

libvirt-debuginfo-0.9.10-21.el6_3.5.i686.rpm

libvirt-python-0.9.10-21.el6_3.5.i686.rpm

 

x86_64:

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-debuginfo-0.9.10-21.el6_3.5.i686.rpm

libvirt-debuginfo-0.9.10-21.el6_3.5.x86_64.rpm

libvirt-python-0.9.10-21.el6_3.5.x86_64.rpm

 

Red Hat Enterprise Linux Desktop Optional (v. 6):

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/libvirt-0.9.10-21.el6_3.5.src.rpm

 

i386:

libvirt-debuginfo-0.9.10-21.el6_3.5.i686.rpm

libvirt-devel-0.9.10-21.el6_3.5.i686.rpm

 

x86_64:

libvirt-debuginfo-0.9.10-21.el6_3.5.i686.rpm

libvirt-debuginfo-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

 

Red Hat Enterprise Linux HPC Node (v. 6):

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/libvirt-0.9.10-21.el6_3.5.src.rpm

 

x86_64:

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-debuginfo-0.9.10-21.el6_3.5.i686.rpm

libvirt-debuginfo-0.9.10-21.el6_3.5.x86_64.rpm

libvirt-python-0.9.10-21.el6_3.5.x86_64.rpm

 

Red Hat Enterprise Linux HPC Node Optional (v. 6):

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/libvirt-0.9.10-21.el6_3.5.src.rpm

 

x86_64:

libvirt-debuginfo-0.9.10-21.el6_3.5.i686.rpm

libvirt-debuginfo-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

 

Red Hat Enterprise Linux Server (v. 6):

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/libvirt-0.9.10-21.el6_3.5.src.rpm

 

i386:

libvirt-0.9.10-21.el6_3.5.i686.rpm

libvirt-client-0.9.10-21.el6_3.5.i686.rpm

libvirt-debuginfo-0.9.10-21.el6_3.5.i686.rpm

libvirt-devel-0.9.10-21.el6_3.5.i686.rpm

libvirt-python-0.9.10-21.el6_3.5.i686.rpm

 

ppc64:

libvirt-0.9.10-21.el6_3.5.ppc64.rpm

libvirt-client-0.9.10-21.el6_3.5.ppc.rpm

libvirt-client-0.9.10-21.el6_3.5.ppc64.rpm

libvirt-debuginfo-0.9.10-21.el6_3.5.ppc.rpm

libvirt-debuginfo-0.9.10-21.el6_3.5.ppc64.rpm

libvirt-devel-0.9.10-21.el6_3.5.ppc.rpm

libvirt-devel-0.9.10-21.el6_3.5.ppc64.rpm

libvirt-python-0.9.10-21.el6_3.5.ppc64.rpm

 

s390x:

libvirt-0.9.10-21.el6_3.5.s390x.rpm

libvirt-client-0.9.10-21.el6_3.5.s390.rpm

libvirt-client-0.9.10-21.el6_3.5.s390x.rpm

libvirt-debuginfo-0.9.10-21.el6_3.5.s390.rpm

libvirt-debuginfo-0.9.10-21.el6_3.5.s390x.rpm

libvirt-devel-0.9.10-21.el6_3.5.s390.rpm

libvirt-devel-0.9.10-21.el6_3.5.s390x.rpm

libvirt-python-0.9.10-21.el6_3.5.s390x.rpm

 

x86_64:

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-debuginfo-0.9.10-21.el6_3.5.i686.rpm

libvirt-debuginfo-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-python-0.9.10-21.el6_3.5.x86_64.rpm

 

Red Hat Enterprise Linux Server Optional (v. 6):

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/libvirt-0.9.10-21.el6_3.5.src.rpm

 

x86_64:

libvirt-debuginfo-0.9.10-21.el6_3.5.x86_64.rpm

libvirt-lock-sanlock-0.9.10-21.el6_3.5.x86_64.rpm

 

Red Hat Enterprise Linux Workstation (v. 6):

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/libvirt-0.9.10-21.el6_3.5.src.rpm

 

i386:

libvirt-0.9.10-21.el6_3.5.i686.rpm

libvirt-client-0.9.10-21.el6_3.5.i686.rpm

libvirt-debuginfo-0.9.10-21.el6_3.5.i686.rpm

libvirt-devel-0.9.10-21.el6_3.5.i686.rpm

libvirt-python-0.9.10-21.el6_3.5.i686.rpm

 

x86_64:

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-debuginfo-0.9.10-21.el6_3.5.i686.rpm

libvirt-debuginfo-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-python-0.9.10-21.el6_3.5.x86_64.rpm

 

Red Hat Enterprise Linux Workstation Optional (v. 6):

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/libvirt-0.9.10-21.el6_3.5.src.rpm

 

x86_64:

libvirt-debuginfo-0.9.10-21.el6_3.5.x86_64.rpm

libvirt-lock-sanlock-0.9.10-21.el6_3.5.x86_64.rpm

 

These packages are GPG signed by Red Hat for security. Our key and

details on how to verify the signature are available from

https://access.redhat.com/security/team/key/#package

 

7. References:

 

https://www.redhat.com/security/data/cve/CVE-2012-4423.html

https://access.redhat.com/security/updates/classification/#moderate

 

8. Contact:

 

The Red Hat security contact is . More contact

details at https://access.redhat.com/security/team/contact/

 

Copyright 2012 Red Hat, Inc.

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