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AUSCERT External Security Bulletin Redistribution
Citrix XenClient XT Multiple Security Updates
13 September 2013
AusCERT Security Bulletin Summary
Operating System: Citrix XenServer
Impact/Access: Root Compromise -- Existing Account
Execute Arbitrary Code/Commands -- Existing Account
Increased Privileges -- Existing Account
Denial of Service -- Existing Account
CVE Names: CVE-2013-2601 CVE-2013-2196 CVE-2013-2195
CVE-2013-2194 CVE-2013-1432 CVE-2013-0231
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Citrix XenClient XT Multiple Security Updates
Document ID: CTX138633
Created On: Aug 28, 2013
Updated On: Aug 28, 2013
Description of Problem
A number of security vulnerabilities have been identified in Citrix XenClient
XT. These vulnerabilities affect all currently supported versions of Citrix
XenClient XT up to and including version 3.1.3.
The following vulnerabilities have been addressed:
- - CVE-2013-0216 & CVE-2013-0217: Linux netback DoS via malicious guest ring
- - CVE-2013-0231: Linux pciback DoS via not rate limited log messages
- - CVE-2013-1432: Page reference counting error
- - CVE-2013-2194, CVE-2013-2195 & CVE-2013-2196: Arbitrary code injection into
the toolstack from PV guests
- - CVE-2013-2601: User can execute arbitrary commands within the NDVM by
creating network connections in the UIVM
- - INTEL-SA-00035: SINIT Authenticated Code Module Privilege Escalation
What Customers Should Do
New versions of Citrix XenClient XT have been released to address these issues.
Citrix recommends that customers using Citrix XenClient XT identify and deploy
these new versions.
Citrix XenServer 3.1.3 and earlier:
XenClient XT version 3.1.4 may be downloaded from
Citrix XenServer 2.1.2 and earlier:
XenClient XT version 2.1.3 may be downloaded from
What Citrix Is Doing
Citrix is notifying customers and channel partners about this potential
security issue. This article is also available from the Citrix Knowledge
Center at http://support.citrix.com/.
Obtaining Support on This Issue
If you require technical assistance with this issue, please contact Citrix
Technical Support. Contact details for Citrix Technical Support are available
Reporting Security Vulnerabilities to Citrix
Citrix welcomes input regarding the security of its products and considers any
and all potential vulnerabilities seriously. If you would like to report a
security issue to Citrix, please compose an e-mail to email@example.com stating
the exact version of the product in which the vulnerability was found and the
steps needed to reproduce the vulnerability.
This document applies to:
XenClient XT 3
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