Topic

An updated virt-v2v package that fixes one security issue and several bugs
is now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having low
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

virt-v2v is a tool for converting and importing virtual machines to
libvirt-managed KVM (Kernel-based Virtual Machine), or Red Hat Enterprise
Virtualization.

Using virt-v2v to convert a guest that has a password-protected VNC console
to a KVM guest removed that password protection from the converted guest:
after conversion, a password was not required to access the converted
guest's VNC console. Now, converted guests will require the same VNC
console password as the original guest. Note that when converting a guest
to run on Red Hat Enterprise Virtualization, virt-v2v will display a
warning that VNC passwords are not supported. (CVE-2011-1773)

Note: The Red Hat Enterprise Linux 6.2 perl-Sys-Virt update must also be
installed to correct CVE-2011-1773.

Bug fixes:

• When converting a guest virtual machine (VM), whose name contained

certain characters, virt-v2v would create a converted guest with a
corrupted name. Now, virt-v2v will not corrupt guest names. (BZ#665883)

• There were numerous usability issues when running virt-v2v as a non-root

user. This update makes it simpler to run virt-v2v as a non-root user.
(BZ#671094)

• virt-v2v failed to convert a Microsoft Windows guest with Windows

Recovery Console installed in a separate partition. Now, virt-v2v will
successfully convert a guest with Windows Recovery Console installed in a
separate partition by ignoring that partition. (BZ#673066)

• virt-v2v failed to convert a Red Hat Enterprise Linux guest which did not

have the symlink "/boot/grub/menu.lst". With this update, virt-v2v can
select a grub configuration file from several places. (BZ#694364)

• This update removes information about the usage of deprecated command

line options in the virt-v2v man page. (BZ#694370)

• virt-v2v would fail to correctly change the allocation policy, (sparse or

preallocated) when converting a guest with QCOW2 image format. The error
message "Cannot import VM, The selected disk configuration is not
supported" was displayed. With this update, allocation policy changes to a
guest with QCOW2 storage will work correctly. (BZ#696089)

• The options "--network" and "--bridge" can not be used in conjunction

when converting a guest, but no error message was displayed. With this
update, virt-v2v will now display an error message if the mutually
exclusive "--network" and "--bridge" command line options are both
specified. (BZ#700759)

• virt-v2v failed to convert a multi-boot guest, and did not clean up

temporary storage and mount points after failure. With this update,
virt-v2v will prompt for which operating system to convert from a
multi-boot guest, and will correctly clean up if the process fails.
(BZ#702007)

• virt-v2v failed to correctly configure modprobe aliases when converting a

VMware ESX guest with VMware Tools installed. With this update, modprobe
aliases will be correctly configured. (BZ#707261)

• When converting a guest with preallocated raw storage using the

libvirtxml input method, virt-v2v failed with the erroneous error message
"size(X) < usage(Y)". This update removes this erroneous error. (BZ#727489)

• When converting a Red Hat Enterprise Linux guest, virt-v2v did not check

that the Cirrus X driver was available before configuring it. With this
update, virt-v2v will attempt to install the Cirrus X driver if it is
required. (BZ#708961)

• VirtIO systems do not support the Windows Recovery Console on 32-bit

Windows XP. The virt-v2v man page has been updated to note this. On Windows
XP Professional x64 Edition, however, if Windows Recovery Console is
re-installed after conversion, it will work as expected. (BZ#732421)

• Placing comments in the guest fstab file by means of the leading "#"

symbol caused an "unknown filesystem" error after conversion of a guest.
With this update comments can now be used and error messages will not be
displayed. (BZ#677870)

Users of virt-v2v should upgrade to this updated package, which fixes these
issues and upgrades virt-v2v to version 0.8.3.

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/kb/docs/DOC-11259

Affected Products

• Red Hat Enterprise Linux Server 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 x86_64
• Red Hat Enterprise Linux Workstation 6 x86_64
• Red Hat Enterprise Linux Desktop 6 x86_64
• Red Hat Enterprise Linux for Scientific Computing 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 x86_64

Fixes

• BZ - 665883 - virt-v2v: Special character in vm name from vmware ESX not showing correct
• BZ - 671094 - Cannot convert VM to libvirt with non-root user
• BZ - 672831 - virt-v2v should use core libguestfs inspection
• BZ - 673066 - virt-v2v does not work with guests that have the Windows Recovery Console installed
• BZ - 677870 - [RFE] virt-v2v show the warning info after convert rhel4u8 guest if comment a line of swap in the fstab
• BZ - 700759 - Suggest give warning message if specify both -n and -b for converting
• BZ - 702007 - v2v fails to remove the mounted export domain when the guest has multiboot OSes
• BZ - 702754 - CVE-2011-1773 virt-v2v: vnc password protection is missing after vm conversion
• BZ - 707261 - Vmware-tools will re-add the default network driver in /etc/modprobe.conf after conversion if ethX device entry missing
• BZ - 708961 - virt-v2v should check or auto install cirrus driver for guest which has not cirrus driver
• BZ - 725685 - xenpv linux guest can not start after conversion because qemu get 'aio' invalid format
• BZ - 727489 - libvirtxml fails if a volume's size is greater than the size reported by qemu-img
• BZ - 729877 - virt-v2v do not install virt-v2v.db file cause some issue
• BZ - 732421 - Guest will BSOD if boot from Windows Recovery Console after conversion

CVEs

• CVE-2011-1773

References

• https://access.redhat.com/security/updates/classification/#low