ID de Prueba:	1.3.6.1.4.1.25623.1.0.880508
Categoría:	CentOS Local Security Checks
Título:	CentOS Update for xen CESA-2011:0496 centos5 i386
Resumen:	The remote host is missing an update for the 'xen'; package(s) announced via the referenced advisory.
Descripción:	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. 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. Affected Software/OS: xen on CentOS 5 Solution: Please install the updated packages. CVSS Score: 6.9 CVSS Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C
Referencia Cruzada:	Common Vulnerability Exposure (CVE) ID: CVE-2011-1583 RHSA-2011:0496 http://rhn.redhat.com/errata/RHSA-2011-0496.html [Xen-devel] 20110509 Re: Xen security advisory CVE-2011-1583 - pv kernel image validation http://lists.xensource.com/archives/html/xen-devel/2011-05/msg00491.html [Xen-devel] 20110509 Xen security advisory CVE-2011-1583 - pv kernel image validation http://lists.xensource.com/archives/html/xen-devel/2011-05/msg00483.html
Copyright	Copyright (C) 2011 Greenbone AG

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