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Test ID:1.3.6.1.4.1.25623.1.0.870573
Category:Red Hat Local Security Checks
Title:RedHat Update for xen RHSA-2012:0370-01
Summary:The remote host is missing an update for the 'xen'; package(s) announced via the referenced advisory.
Description:Summary:
The remote host is missing an update for the 'xen'
package(s) announced via the referenced advisory.

Vulnerability Insight:
The xen packages contain administration tools and the xend service for
managing the kernel-xen kernel for virtualization on Red Hat Enterprise
Linux.

A heap overflow flaw was found in the way QEMU emulated the e1000 network
interface card. A privileged guest user in a virtual machine whose network
interface is configured to use the e1000 emulated driver could use this
flaw to crash QEMU or, possibly, escalate their privileges on the host.
(CVE-2012-0029)

Red Hat would like to thank Nicolae Mogoreanu for reporting this issue.

This update also fixes the following bugs:

* Adding support for jumbo frames introduced incorrect network device
expansion when a bridge is created. The expansion worked correctly with the
default configuration, but could have caused network setup failures when a
user-defined network script was used. This update changes the expansion so
network setup will not fail, even when a user-defined network script is
used. (BZ#797191)

* A bug was found in xenconsoled, the Xen hypervisor console daemon. If
timestamp logging for this daemon was enabled (using both the
XENCONSOLED_TIMESTAMP_HYPERVISOR_LOG and XENCONSOLED_TIMESTAMP_GUEST_LOG
options in '/etc/sysconfig/xend'), xenconsoled could crash if the guest
emitted a lot of information to its serial console in a short period of
time. Eventually, the guest would freeze after the console buffer was
filled due to the crashed xenconsoled. Timestamp logging is disabled by
default. (BZ#797836)

All xen users are advised to upgrade to these updated packages, which
contain backported patches to correct these issues. The system must be
rebooted for this update to take effect.

Affected Software/OS:
xen on Red Hat Enterprise Linux (v. 5 server)

Solution:
Please Install the Updated Packages.

CVSS Score:
7.4

CVSS Vector:
AV:A/AC:M/Au:S/C:C/I:C/A:C

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2012-0029
BugTraq ID: 51642
http://www.securityfocus.com/bid/51642
http://lists.fedoraproject.org/pipermail/package-announce/2012-June/081972.html
https://bugzilla.redhat.com/show_bug.cgi?id=772075
http://www.redhat.com/support/errata/RHSA-2012-0050.html
RedHat Security Advisories: RHSA-2012:0370
http://rhn.redhat.com/errata/RHSA-2012-0370.html
http://secunia.com/advisories/47740
http://secunia.com/advisories/47741
http://secunia.com/advisories/47992
http://secunia.com/advisories/48318
http://secunia.com/advisories/50913
SuSE Security Announcement: SUSE-SU-2012:1320 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2012-10/msg00002.html
SuSE Security Announcement: openSUSE-SU-2012:0207 (Google Search)
http://lists.opensuse.org/opensuse-updates/2012-02/msg00009.html
http://www.ubuntu.com/usn/USN-1339-1
XForce ISS Database: qemu-processtxdesc-bo(72656)
https://exchange.xforce.ibmcloud.com/vulnerabilities/72656
CopyrightCopyright (c) 2012 Greenbone Networks GmbH

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