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AUSCERT External Security Bulletin Redistribution
ESB-2017.2698
Citrix XenServer Security Update for CVE-2017-15597
25 October 2017
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AusCERT Security Bulletin Summary
---------------------------------
Product: Citrix XenServer
Publisher: Citrix
Operating System: Citrix XenServer
Impact/Access: Increased Privileges -- Existing Account
Denial of Service -- Existing Account
Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2017-15597
Original Bulletin:
https://support.citrix.com/article/CTX229057
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CTX229057
Citrix XenServer Security Update for CVE-2017-15597
Security Bulletin
High
Created: 24 Oct 2017
Modified: 24 Oct 2017
Applicable Products
XenServer 7.2
XenServer 7.1 LTSR Cumulative Update 1
XenServer 7.1
XenServer 7.0
XenServer 6.5
Description of Problem
A security vulnerability has been identified in Citrix XenServer that
may allow a malicious administrator of a guest VM to compromise the host.
This vulnerability affects all currently supported versions of
Citrix XenServer up to and including Citrix XenServer 7.2.
The following vulnerability has been addressed:
CVE-2017-15597: pin count / page reference race in grant table
code
What Customers Should Do
Hotfixes have been released to address these issues. Citrix strongly
recommends that affected customers install these hotfixes as soon as
possible. The hotfixes can be downloaded from the following locations:
Citrix XenServer 7.2: CTX229067 - https://support.citrix.com/article/CTX229067
Citrix XenServer 7.1 LTSR CU1: CTX229066 - https://support.citrix.com/article/CTX229066
Citrix XenServer 7.1 LTSR: CTX229065 - https://support.citrix.com/article/CTX229065
Citrix XenServer 7.0: CTX229064 - https://support.citrix.com/article/CTX229064
Citrix XenServer 6.5 SP1: CTX229063 - https://support.citrix.com/article/CTX229063
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 at
https://www.citrix.com/support/open-a-support-case.html.
Reporting Security Vulnerabilities
Citrix welcomes input regarding the security of its products and
considers any and all potential vulnerabilities seriously. For
guidance on how to report security-related issues to Citrix, please
see the following document: CTX081743 Reporting
Security Issues to Citrix
Changelog
Date Change
24th October 2017 Initial Publishing
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