Oracle Linux 6 : libvirt (ELSA-2011-0479)

This script is Copyright (C) 2013 Tenable Network Security, Inc.


Synopsis :

The remote Oracle Linux host is missing one or more security updates.

Description :

From Red Hat Security Advisory 2011:0479 :

Updated libvirt packages that fix one security issue and one bug are
now available for Red Hat Enterprise Linux 6.

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.

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.

See also :

https://oss.oracle.com/pipermail/el-errata/2011-May/002113.html

Solution :

Update the affected libvirt packages.

Risk factor :

Low / CVSS Base Score : 3.3
(CVSS2#AV:A/AC:L/Au:N/C:N/I:N/A:P)
CVSS Temporal Score : 2.4
(CVSS2#E:U/RL:OF/RC:C)
Public Exploit Available : false

Family: Oracle Linux Local Security Checks

Nessus Plugin ID: 68268 ()

Bugtraq ID: 47148

CVE ID: CVE-2011-1486