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Fedora Update Notification
FEDORA-2010-11021
2010-07-13 06:44:53
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Name : libvirt
Product : Fedora 12
Version : 0.8.2
Release : 1.fc12
URL :
http://libvirt.org/
Summary : Library providing a simple API virtualization
Description :
Libvirt is a C toolkit to interact with the virtualization capabilities
of recent versions of Linux (and other OSes). The main package includes
the libvirtd server exporting the virtualization support.
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Update Information:
A reboot is required to update the iptables rules for the default virtual
network to address the CVE-2010-2242 All disk format probing is now disabled
in a default installation of libvirt. This change may prevent KVM guests using
qcow2 disks from booting successfully. If this occurs verify that the guest
XML <disk> element has explicitly requested use of the qcow2 data format via the
<driver> element: <driver name='qemu' type='qcow2'/> If the qcow2 is
using an external backing file, it may be necessary to re-create the qcow2 file,
explicitly specifying the backing store format with the '-o' option. qemu-
img create -f qcow2 -b master.qcow2 -o backing_fmt=qcow2 newdisk.qcow2 If
this is not possible, disk format probing can be re-enabled via
/etc/libvirt/qemu.conf allow_disk_format_probing = 1 NB, enabling disk
format probing has security consequences as per the linked CVEs.
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ChangeLog:
* Mon Jul 12 2010 Daniel P. Berrange <berrange@redhat.com> - 0.8.2-1
- Update to 0.8.2 release
- CVE-2010-2237 ignoring defined main disk format when looking up disk backing stores
- CVE-2010-2238 ignoring defined disk backing store format when recursing into disk
image backing stores
- CVE-2010-2239 not setting user defined backing store format when creating new image
- CVE-2010-2242 libvirt: improperly mapped source privileged ports may allow for
obtaining privileged resources on the host
* Thu Jun 17 2010 Cole Robinson <crobinso@redhat.com> - 0.7.1-18.fc12
- Actually apply all previous patches
* Tue Jun 15 2010 Cole Robinson <crobinso@redhat.com> - 0.7.1-17.fc12
- Fix attach-device crash on cgroup cleanup (bz 556791)
- Fix crash on bad LXC URI (bz 554191)
- Add qemu.conf options for audio workaround
- Fix permissions of storage backing stores (bz 579067)
- Fix parsing certain USB sysfs files (bz 598272)
- Improve migration error reporting (bz 499750)
- Sanitize pool target paths (bz 494005)
- Add qemu.conf for clear emulator capabilities
- Prevent libvirtd inside a VM from breaking network access (bz 235961)
- Mention --all in 'virsh list' docs (bz 575512)
* Mon May 17 2010 Cole Robinson <crobinso@redhat.com> - 0.7.1-16.fc12
- Fix crash with invalid QEmu URI (bz 566070)
- Fix VNC TLS crash (bz 544305)
- Fix USB devices with high bus/addr values (bz 542639)
- Fix save/restore with non-root guests (bz 534143, bz 532654)
- Fix USB devices attached via virt-manager (bz 537227)
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References:
[ 1 ] Bug #607810 - CVE-2010-2237 libvirt: ignoring defined main disk format when looking up disk backing stores
https://bugzilla.redhat.com/show_bug.cgi?id=607810
[ 2 ] Bug #607811 - CVE-2010-2238 libvirt: ignoring defined disk backing store format when recursing into disk image backing stores
https://bugzilla.redhat.com/show_bug.cgi?id=607811
[ 3 ] Bug #607812 - CVE-2010-2239 libvirt: not setting user defined backing store format when creating new image
https://bugzilla.redhat.com/show_bug.cgi?id=607812
[ 4 ] Bug #602455 - CVE-2010-2242 libvirt: improperly mapped source privileged ports may allow for obtaining privileged resources on the host
https://bugzilla.redhat.com/show_bug.cgi?id=602455
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This update can be installed with the "yum" update program. Use
su -c 'yum update libvirt' at the command line.
For more information, refer to "Managing Software with yum",
available at
http://docs.fedoraproject.org/yum/.
All packages are signed with the Fedora Project GPG key. More details on the
GPG keys used by the Fedora Project can be found at
https://fedoraproject.org/keys
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