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===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2014.1209
Moderate: libvirt security and bug fix update
23 July 2014
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: libvirt
Publisher: Red Hat
Operating System: Red Hat Enterprise Linux Server 7
Red Hat Enterprise Linux WS/Desktop 7
Impact/Access: Denial of Service -- Existing Account
Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2014-0179
Reference: ESB-2014.0889
ESB-2014.0834
Original Bulletin:
https://rhn.redhat.com/errata/RHSA-2014-0914.html
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Red Hat Security Advisory
Synopsis: Moderate: libvirt security and bug fix update
Advisory ID: RHSA-2014:0914-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2014-0914.html
Issue date: 2014-07-22
CVE Names: CVE-2014-0179
=====================================================================
1. Summary:
Updated libvirt packages that fix one security issue and three bugs are now
available for Red Hat Enterprise Linux 7.
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 Client (v. 7) - x86_64
Red Hat Enterprise Linux Client Optional (v. 7) - x86_64
Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64
Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64
Red Hat Enterprise Linux Server (v. 7) - ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 7) - x86_64
Red Hat Enterprise Linux Workstation Optional (v. 7) - 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.
It was found that libvirt passes the XML_PARSE_NOENT flag when parsing XML
documents using the libxml2 library, in which case all XML entities in the
parsed documents are expanded. A user able to force libvirtd to parse an
XML document with an entity pointing to a file could use this flaw to read
the contents of that file; parsing an XML document with an entity pointing
to a special file that blocks on read access could cause libvirtd to hang
indefinitely, resulting in a denial of service on the system.
(CVE-2014-0179)
Red Hat would like to thank the upstream Libvirt project for reporting this
issue. Upstream acknowledges Daniel P. Berrange and Richard Jones as the
original reporters.
This update also fixes the following bugs:
* A previous update of the libvirt package introduced an error; a
SIG_SETMASK argument was incorrectly replaced by a SIG_BLOCK argument after
the poll() system call. Consequently, the SIGCHLD signal could be
permanently blocked, which caused signal masks to not return to their
original values and defunct processes to be generated. With this update,
the original signal masks are restored and defunct processes are no longer
generated. (BZ#1112689)
* An attempt to start a domain that did not exist caused network filters to
be locked for read-only access. As a consequence, when trying to gain
read-write access, a deadlock occurred. This update applies a patch to fix
this bug and an attempt to start a non-existent domain no longer causes a
deadlock in the described scenario. (BZ#1112690)
* Previously, the libvirtd daemon was binding only to addresses that were
configured on certain network interfaces. When libvirtd started before the
IPv4 addresses had been configured, libvirtd listened only on the IPv6
addresses. The daemon has been modified to not require an address to be
configured when binding to a wildcard address, such as "0.0.0.0" or "::".
As a result, libvirtd binds to both IPv4 and IPv6 addresses as expected.
(BZ#1112692)
Users of libvirt are advised to upgrade to these updated packages, which
fix these bugs. 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/articles/11258
5. Bugs fixed (https://bugzilla.redhat.com/):
1088290 - CVE-2014-0179 libvirt: unsafe parsing of XML documents allows libvirt DoS and/or arbitrary file read
1112689 - use of tls with libvirt.so can leave zombie processes
1112690 - nwfilter deadlock
1112692 - libvirt binds only to ipv6
6. Package List:
Red Hat Enterprise Linux Client (v. 7):
Source:
libvirt-1.1.1-29.el7_0.1.src.rpm
x86_64:
libvirt-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-client-1.1.1-29.el7_0.1.i686.rpm
libvirt-client-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-config-network-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-config-nwfilter-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-driver-interface-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-driver-lxc-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-driver-network-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-driver-nodedev-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-driver-nwfilter-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-driver-qemu-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-driver-secret-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-driver-storage-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-kvm-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-debuginfo-1.1.1-29.el7_0.1.i686.rpm
libvirt-debuginfo-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-python-1.1.1-29.el7_0.1.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
x86_64:
libvirt-daemon-lxc-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-debuginfo-1.1.1-29.el7_0.1.i686.rpm
libvirt-debuginfo-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-devel-1.1.1-29.el7_0.1.i686.rpm
libvirt-devel-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-docs-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-lock-sanlock-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-login-shell-1.1.1-29.el7_0.1.x86_64.rpm
Red Hat Enterprise Linux ComputeNode (v. 7):
Source:
libvirt-1.1.1-29.el7_0.1.src.rpm
x86_64:
libvirt-client-1.1.1-29.el7_0.1.i686.rpm
libvirt-client-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-debuginfo-1.1.1-29.el7_0.1.i686.rpm
libvirt-debuginfo-1.1.1-29.el7_0.1.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
x86_64:
libvirt-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-config-network-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-config-nwfilter-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-driver-interface-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-driver-lxc-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-driver-network-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-driver-nodedev-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-driver-nwfilter-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-driver-qemu-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-driver-secret-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-driver-storage-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-kvm-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-lxc-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-debuginfo-1.1.1-29.el7_0.1.i686.rpm
libvirt-debuginfo-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-devel-1.1.1-29.el7_0.1.i686.rpm
libvirt-devel-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-docs-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-lock-sanlock-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-login-shell-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-python-1.1.1-29.el7_0.1.x86_64.rpm
Red Hat Enterprise Linux Server (v. 7):
Source:
libvirt-1.1.1-29.el7_0.1.src.rpm
ppc64:
libvirt-1.1.1-29.el7_0.1.ppc64.rpm
libvirt-client-1.1.1-29.el7_0.1.ppc.rpm
libvirt-client-1.1.1-29.el7_0.1.ppc64.rpm
libvirt-daemon-1.1.1-29.el7_0.1.ppc64.rpm
libvirt-daemon-config-network-1.1.1-29.el7_0.1.ppc64.rpm
libvirt-daemon-config-nwfilter-1.1.1-29.el7_0.1.ppc64.rpm
libvirt-daemon-driver-interface-1.1.1-29.el7_0.1.ppc64.rpm
libvirt-daemon-driver-lxc-1.1.1-29.el7_0.1.ppc64.rpm
libvirt-daemon-driver-network-1.1.1-29.el7_0.1.ppc64.rpm
libvirt-daemon-driver-nodedev-1.1.1-29.el7_0.1.ppc64.rpm
libvirt-daemon-driver-nwfilter-1.1.1-29.el7_0.1.ppc64.rpm
libvirt-daemon-driver-secret-1.1.1-29.el7_0.1.ppc64.rpm
libvirt-daemon-driver-storage-1.1.1-29.el7_0.1.ppc64.rpm
libvirt-debuginfo-1.1.1-29.el7_0.1.ppc.rpm
libvirt-debuginfo-1.1.1-29.el7_0.1.ppc64.rpm
libvirt-devel-1.1.1-29.el7_0.1.ppc.rpm
libvirt-devel-1.1.1-29.el7_0.1.ppc64.rpm
libvirt-docs-1.1.1-29.el7_0.1.ppc64.rpm
libvirt-python-1.1.1-29.el7_0.1.ppc64.rpm
s390x:
libvirt-1.1.1-29.el7_0.1.s390x.rpm
libvirt-client-1.1.1-29.el7_0.1.s390.rpm
libvirt-client-1.1.1-29.el7_0.1.s390x.rpm
libvirt-daemon-1.1.1-29.el7_0.1.s390x.rpm
libvirt-daemon-config-network-1.1.1-29.el7_0.1.s390x.rpm
libvirt-daemon-config-nwfilter-1.1.1-29.el7_0.1.s390x.rpm
libvirt-daemon-driver-interface-1.1.1-29.el7_0.1.s390x.rpm
libvirt-daemon-driver-lxc-1.1.1-29.el7_0.1.s390x.rpm
libvirt-daemon-driver-network-1.1.1-29.el7_0.1.s390x.rpm
libvirt-daemon-driver-nodedev-1.1.1-29.el7_0.1.s390x.rpm
libvirt-daemon-driver-nwfilter-1.1.1-29.el7_0.1.s390x.rpm
libvirt-daemon-driver-secret-1.1.1-29.el7_0.1.s390x.rpm
libvirt-daemon-driver-storage-1.1.1-29.el7_0.1.s390x.rpm
libvirt-debuginfo-1.1.1-29.el7_0.1.s390.rpm
libvirt-debuginfo-1.1.1-29.el7_0.1.s390x.rpm
libvirt-devel-1.1.1-29.el7_0.1.s390.rpm
libvirt-devel-1.1.1-29.el7_0.1.s390x.rpm
libvirt-docs-1.1.1-29.el7_0.1.s390x.rpm
libvirt-python-1.1.1-29.el7_0.1.s390x.rpm
x86_64:
libvirt-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-client-1.1.1-29.el7_0.1.i686.rpm
libvirt-client-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-config-network-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-config-nwfilter-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-driver-interface-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-driver-lxc-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-driver-network-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-driver-nodedev-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-driver-nwfilter-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-driver-qemu-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-driver-secret-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-driver-storage-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-kvm-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-debuginfo-1.1.1-29.el7_0.1.i686.rpm
libvirt-debuginfo-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-devel-1.1.1-29.el7_0.1.i686.rpm
libvirt-devel-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-docs-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-python-1.1.1-29.el7_0.1.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 7):
ppc64:
libvirt-daemon-lxc-1.1.1-29.el7_0.1.ppc64.rpm
libvirt-debuginfo-1.1.1-29.el7_0.1.ppc64.rpm
libvirt-login-shell-1.1.1-29.el7_0.1.ppc64.rpm
s390x:
libvirt-daemon-lxc-1.1.1-29.el7_0.1.s390x.rpm
libvirt-debuginfo-1.1.1-29.el7_0.1.s390x.rpm
libvirt-login-shell-1.1.1-29.el7_0.1.s390x.rpm
x86_64:
libvirt-daemon-lxc-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-debuginfo-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-lock-sanlock-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-login-shell-1.1.1-29.el7_0.1.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 7):
Source:
libvirt-1.1.1-29.el7_0.1.src.rpm
x86_64:
libvirt-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-client-1.1.1-29.el7_0.1.i686.rpm
libvirt-client-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-config-network-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-config-nwfilter-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-driver-interface-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-driver-lxc-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-driver-network-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-driver-nodedev-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-driver-nwfilter-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-driver-qemu-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-driver-secret-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-driver-storage-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-daemon-kvm-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-debuginfo-1.1.1-29.el7_0.1.i686.rpm
libvirt-debuginfo-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-devel-1.1.1-29.el7_0.1.i686.rpm
libvirt-devel-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-docs-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-python-1.1.1-29.el7_0.1.x86_64.rpm
Red Hat Enterprise Linux Workstation Optional (v. 7):
x86_64:
libvirt-daemon-lxc-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-debuginfo-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-lock-sanlock-1.1.1-29.el7_0.1.x86_64.rpm
libvirt-login-shell-1.1.1-29.el7_0.1.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-2014-0179.html
https://access.redhat.com/security/updates/classification/#moderate
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2014 Red Hat, Inc.
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