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Test ID:1.3.6.1.4.1.25623.1.0.69640
Category:Red Hat Local Security Checks
Title:RedHat Security Advisory RHSA-2011:0496
Summary:NOSUMMARY
Description:Description:
The remote host is missing updates announced in
advisory RHSA-2011:0496.

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

It was found that the xc_try_bzip2_decode() and xc_try_lzma_decode() decode
routines did not correctly check for a possible buffer size overflow in the
decoding loop. As well, several integer overflow flaws and missing
error/range checking were found that could lead to an infinite loop. A
privileged guest user could use these flaws to crash the guest or,
possibly, execute arbitrary code in the privileged management domain
(Dom0). (CVE-2011-1583)

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.

Solution:
Please note that this update is available via
Red Hat Network. To use Red Hat Network, launch the Red
Hat Update Agent with the following command: up2date

http://rhn.redhat.com/errata/RHSA-2011-0496.html

Risk factor : High

CVSS Score:
6.9

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2011-1583
http://lists.xensource.com/archives/html/xen-devel/2011-05/msg00491.html
http://lists.xensource.com/archives/html/xen-devel/2011-05/msg00483.html
RedHat Security Advisories: RHSA-2011:0496
http://rhn.redhat.com/errata/RHSA-2011-0496.html
CopyrightCopyright (c) 2011 E-Soft Inc. http://www.securityspace.com

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