[RHSA-2009:0382-01] Moderate: libvirt security update

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Red Hat Security Advisory

 

Synopsis: Moderate: libvirt security update

Advisory ID: RHSA-2009:0382-01

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2009-0382.html

Issue date: 2009-03-19

CVE Names: CVE-2008-5086 CVE-2009-0036

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1. Summary:

 

Updated libvirt packages that fix two security issues are now available for

Red Hat Enterprise Linux 5.

 

This update has been rated as having moderate security impact by the Red

Hat Security Response Team.

 

2. Relevant releases/architectures:

 

RHEL Desktop Multi OS (v. 5 client) - i386, x86_64

RHEL Virtualization (v. 5 server) - i386, ia64, x86_64

 

3. Description:

 

libvirt is a C API for managing and interacting with the virtualization

capabilities of Linux and other operating systems. libvirt also provides

tools for remotely managing virtualized systems.

 

The libvirtd daemon was discovered to not properly check user connection

permissions before performing certain privileged actions, such as

requesting migration of an unprivileged guest domain to another system. A

local user able to establish a read-only connection to libvirtd could use

this flaw to perform actions that should be restricted to read-write

connections. (CVE-2008-5086)

 

libvirt_proxy, a setuid helper application allowing non-privileged users to

communicate with the hypervisor, was discovered to not properly validate

user requests. Local users could use this flaw to cause a stack-based

buffer overflow in libvirt_proxy, possibly allowing them to run arbitrary

code with root privileges. (CVE-2009-0036)

 

All users are advised to upgrade to these updated packages, which contain

backported patches which resolve these issues. After installing the update,

libvirtd must be restarted manually (for example, by issuing a

"service libvirtd restart" command) for this change to take effect.

 

4. Solution:

 

Before applying this update, make sure that all previously-released

errata relevant to your system have been applied.

 

This update is available via Red Hat Network. Details on how to use

the Red Hat Network to apply this update are available at

http://kbase.redhat.com/faq/docs/DOC-11259

 

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

 

476560 - CVE-2008-5086 libvirt: missing checks for read-only connection

484947 - CVE-2009-0036 libvirt: libvirt_proxy buffer overflow

 

6. Package List:

 

RHEL Desktop Multi OS (v. 5 client):

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/libvirt-0.3.3-14.el5_3.1.src.rpm

 

i386:

libvirt-0.3.3-14.el5_3.1.i386.rpm

libvirt-debuginfo-0.3.3-14.el5_3.1.i386.rpm

libvirt-devel-0.3.3-14.el5_3.1.i386.rpm

libvirt-python-0.3.3-14.el5_3.1.i386.rpm

 

x86_64:

libvirt-0.3.3-14.el5_3.1.i386.rpm

libvirt-0.3.3-14.el5_3.1.x86_64.rpm

libvirt-debuginfo-0.3.3-14.el5_3.1.i386.rpm

libvirt-debuginfo-0.3.3-14.el5_3.1.x86_64.rpm

libvirt-devel-0.3.3-14.el5_3.1.i386.rpm

libvirt-devel-0.3.3-14.el5_3.1.x86_64.rpm

libvirt-python-0.3.3-14.el5_3.1.x86_64.rpm

 

RHEL Virtualization (v. 5 server):

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/libvirt-0.3.3-14.el5_3.1.src.rpm

 

i386:

libvirt-0.3.3-14.el5_3.1.i386.rpm

libvirt-debuginfo-0.3.3-14.el5_3.1.i386.rpm

libvirt-devel-0.3.3-14.el5_3.1.i386.rpm

libvirt-python-0.3.3-14.el5_3.1.i386.rpm

 

ia64:

libvirt-0.3.3-14.el5_3.1.ia64.rpm

libvirt-debuginfo-0.3.3-14.el5_3.1.ia64.rpm

libvirt-devel-0.3.3-14.el5_3.1.ia64.rpm

libvirt-python-0.3.3-14.el5_3.1.ia64.rpm

 

x86_64:

libvirt-0.3.3-14.el5_3.1.i386.rpm

libvirt-0.3.3-14.el5_3.1.x86_64.rpm

libvirt-debuginfo-0.3.3-14.el5_3.1.i386.rpm

libvirt-debuginfo-0.3.3-14.el5_3.1.x86_64.rpm

libvirt-devel-0.3.3-14.el5_3.1.i386.rpm

libvirt-devel-0.3.3-14.el5_3.1.x86_64.rpm

libvirt-python-0.3.3-14.el5_3.1.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://www.redhat.com/security/team/key/#package

 

7. References:

 

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5086

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0036

http://www.redhat.com/security/updates/classification/#moderate

 

8. Contact:

 

The Red Hat security contact is . More contact

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

 

Copyright 2009 Red Hat, Inc.

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