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Ubuntu: USN-1234-1 Moderate: libvirt Remote Management Vulnerability

red hat
Calendar Grey May 2, 2011
Dist Redhat Esm H88
The updated libvirt advisory for Red Hat contains essential security fixes and enhancements, making it vital to upgrade packages for system integrity and protection against vulnerabilities
Updated libvirt packages that fix one security issue and one bug are now available for Red Hat Enterprise Linux 6

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

Summary

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 remotely managing virtualized systems.
A flaw was found in the way libvirtd handled error reporting for concurrent connections. A remote attacker able to establish read-only connections to libvirtd on a server could use this flaw to crash libvirtd. (CVE-2011-1486)
This update also fixes the following bug:
* Previously, running qemu under a different UID prevented it from accessing files with mode 0660 permissions that were owned by a different user, but by a group that qemu was a member of. (BZ#668692)
All libvirt users are advised to upgrade to these updated packages, which contain backported patches to resolve these issues. After installing the updated packages, libvirtd must be restarted ("service libvirtd restart") for this update to take effect.

Topics%20covered

Topics Covered

security advisory moderate Red Hat bug fix remote access libvirt

References

https://access.redhat.com/security/cve/CVE-2011-1486 https://access.redhat.com/security/updates/classification/#moderate

Package List

Red Hat Enterprise Linux Desktop (v. 6):
Source:
i386: libvirt-0.8.1-27.el6_0.6.i686.rpm libvirt-client-0.8.1-27.el6_0.6.i686.rpm libvirt-debuginfo-0.8.1-27.el6_0.6.i686.rpm libvirt-python-0.8.1-27.el6_0.6.i686.rpm
x86_64: libvirt-0.8.1-27.el6_0.6.x86_64.rpm libvirt-client-0.8.1-27.el6_0.6.i686.rpm libvirt-client-0.8.1-27.el6_0.6.x86_64.rpm libvirt-debuginfo-0.8.1-27.el6_0.6.i686.rpm libvirt-debuginfo-0.8.1-27.el6_0.6.x86_64.rpm libvirt-python-0.8.1-27.el6_0.6.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
Source:
i386: libvirt-debuginfo-0.8.1-27.el6_0.6.i686.rpm libvirt-devel-0.8.1-27.el6_0.6.i686.rpm
x86_64: libvirt-debuginfo-0.8.1-27.el6_0.6.i686.rpm libvirt-debuginfo-0.8.1-27.el6_0.6.x86_64.rpm libvirt-devel-0.8.1-27.el6_0.6.i686.rpm libvirt-devel-0.8.1-27.el6_0.6.x86_64.rpm
Red Hat Enterprise Linux HPC Node (v. 6):
Source:
x86_64: libvirt-0.8.1-27.el6_0.6.x86_64.rpm libvirt-client-0.8.1-27.el6_0.6.i686.rpm libvirt-client-0.8.1-27.el6_0.6.x86_64.rpm libvirt-debuginfo-0.8.1-27.el6_0.6.i686.rpm libvirt-debuginfo-0.8.1-27.el6_0.6.x86_64.rpm libvirt-python-0.8.1-27.el6_0.6.x86_64.rpm
Red Hat Enterprise Linux HPC Node Optional (v. 6):
Source:
x86_64: libvirt-debuginfo-0.8.1-27.el6_0.6.i686.rpm libvirt-debuginfo-0.8.1-27.el6_0.6.x86_64.rpm

Read the Full Advisory


Advisory ID: RHSA-2011:0479-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2011:0479.html
Issue date: 2011-05-02

Topic

Updated libvirt packages that fix one security issue and one bug are nowavailable for Red Hat Enterprise Linux 6.The Red Hat Security Response Team has rated this update as having moderatesecurity impact. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available from the CVE link inthe References section.

Topics%20covered

Topics Covered

security advisory moderate Red Hat bug fix remote access libvirt

Relevant Releases Architectures

Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64

Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64

Red Hat Enterprise Linux HPC Node (v. 6) - x86_64

Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64

Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

Bugs Fixed

668692 - qemu process is spawned with no supplementary groups

693391 - CVE-2011-1486 libvirt: error reporting in libvirtd is not thread safe

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