RHSA-2011:0586 - Security Advisory

Topic

Updated libguestfs packages that fix one security issue, several bugs, and
add one enhancement are 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

libguestfs is a library for accessing and modifying guest disk images.

libguestfs relied on the format auto-detection in QEMU rather than
allowing the guest image file format to be specified. A privileged guest
user could potentially use this flaw to read arbitrary files on the host
that were accessible to a user on that host who was running a program that
utilized the libguestfs library. (CVE-2010-3851)

This erratum upgrades libguestfs to upstream version 1.7.17, which includes
a number of bug fixes and one enhancement. Documentation for these bug
fixes and this enhancement is provided in the Technical Notes document,
linked to in the References section.

All libguestfs users are advised to upgrade to these updated packages,
which correct this issue, and fix the bugs and add the enhancement noted
in the Technical Notes.

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 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
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension 6 x86_64

Fixes

• BZ - 600144 - document that mkmountpoint and umount-all cannot be mixed
• BZ - 612308 - qemu -net / vlan option deprecated. Use -netdev instead.
• BZ - 613593 - Rebase libguestfs in RHEL 6.1
• BZ - 615223 - vfs-type could not read just-created filesystem
• BZ - 617440 - guestfish: fails to tilde expand '~' when the $HOME env is unset
• BZ - 627468 - [RFE]It's better to emphasize "libguestfs-winsupport" in V2V manpage or error output
• BZ - 627832 - [RFE] guestfish should print outputs in a suitable base (eg. octal for modes)
• BZ - 627833 - get-e2uuid should use blkid instead of "tune2fs -l" to get filesystem UUID
• BZ - 633174 - some guestfish sub commands can not handle special files properly
• BZ - 639601 - "virt-ls" command failed to parse domain name "#"
• BZ - 639602 - ""virt-list-filesystems" fails to parse the command line argument if the domain name is "#".
• BZ - 643958 - CVE-2010-3851 libguestfs: missing disk format specifier when adding a disk
• BZ - 657472 - checksum: wrong check sum type causes umount to fail
• BZ - 657502 - virt-inspector depends on EPEL package perl-String-ShellQuote but does not require it
• BZ - 666577 - libguestfs: unknown filesystem /dev/fd0
• BZ - 666579 - libguestfs: unknown filesystem /dev/hd{x} (cdrom)
• BZ - 668115 - virt-filesystems command fails on guest with corrupt filesystem label
• BZ - 668611 - guestfish -i is trying to mount all mounts from /etc/fstab and fails with an error when device doesn't exists
• BZ - 673477 - Add a grep-friendly string to LIBGUESTFS_TRACE output
• BZ - 673721 - Typo in virt-make-fs manual page
• BZ - 676788 - libguestfs trace segfaults when list-filesystems returns error
• BZ - 677616 - appliance doesn't include augeas device_map lens
• BZ - 691724 - virt-inspector reports unknown filesystem /dev/vda1
• BZ - 695138 - Remove dependency on gfs2-utils

CVEs

• CVE-2010-3851

References

• https://access.redhat.com/security/updates/classification/#low
• http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/6.1_Technical_Notes/index.html#libguestfs