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 |