Xen 'hvmop _ set_mem_access 'Local Denial of Service Vulnerability

Xen 'hvmop _ set_mem_access 'Local Denial of Service Vulnerability

Release date: 2012-4 4
Updated on: 2012-12-07

Affected Systems:
XenSource Xen 4.x
XenSource Xen 3.x
Description:
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Bugtraq id: 56799
CVE (CAN) ID: CVE-2012-5512

Xen is an open-source Virtual Machine monitor developed by the University of Cambridge.

In Xen 4.1, the HVMOP_set_mem_access operation handler uses it as an array index before checking the input range, resulting in cross-border access. A malicious client administrator can cause Xen to crash.

<* Source: vendor

Link: http://secunia.com/advisories/51397/
Http://lists.xen.org/archives/html/xen-announce/2012-12/msg00003.html
*>

Suggestion:
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Vendor patch:

XenSource
---------
The vendor has released a patch to fix this security problem. Please download the patch from the vendor's homepage.
Http://lists.xen.org/archives/html/xen-announce/2012-12/binaFPEoixdQ4.bin

$ Sha256sum xsa28 *. patch
Bytes
Xsa28-4.1.patch
$

Http://xen.xensource.com/