==================================================================== CERT-Renater Note d'Information No. 2012/VULN345 ____________________________________________________________________ DATE : 06/09/2012 HARDWARE PLATFORM(S): / OPERATING SYSTEM(S) : Systems running Citrix XenServer versions up to and including 6.0.2. ====================================================================== http://support.citrix.com/article/CTX134708 ______________________________________________________________________ Document ID: CTX134708 / Created On: 5 sept. 2012 / Updated On: 5 sept. 2012 Severity: High Description of Problem A number of security vulnerabilities have been identified in Citrix XenServer. These vulnerabilities affect all currently supported versions of Citrix XenServer up to and including version 6.0.2. The following denial of service and guest-to-host privilege escalation vulnerabilities have been addressed: • hypercall physdev_get_free_pirq vulnerability (CVE-2012-3495) • PHYSDEVOP_map_pirq index vulnerability (CVE-2012-3498) • Qemu VT100 emulation vulnerability (CVE-2012-3515) • Grant table entry swaps have inadequate bounds checking (CVE-2012-3516) • HVM guest user mode MMIO emulation DoS vulnerability (CVE-2012-3432) • HVM guest destroy p2m teardown host DoS vulnerability (CVE-2012-3433) • hypercall set_debugreg vulnerability (CVE-2012-3494) • XENMEM_populate_physmap DoS vulnerability (CVE-2012-3496) • PV guest console vulnerability (CVE-2012-4606) What Customers Should Do Hotfixes have been released to address these issues in all supported versions and update levels of Citrix XenServer. Citrix strongly recommends that customers using Citrix XenServer identify and apply the hotfixes that relate to their deployed versions: Citrix XenServer 6.0.2: http://support.citrix.com/article/ctx134753 Citrix XenServer 6.0.0: http://support.citrix.com/article/ctx134752 Citrix XenServer 5.6 Service Pack 2: http://support.citrix.com/article/ctx134751 Citrix XenServer 5.6 Feature Pack 1: http://support.citrix.com/article/ctx134750 Citrix XenServer 5.6: http://support.citrix.com/article/ctx134748 Citrix XenServer 5.5 Update 2: http://support.citrix.com/article/ctx134747 Citrix XenServer 5.0 Update 3: http://support.citrix.com/article/ctx134746 Customers using Citrix XenServer 5.6 in the Common Criteria evaluated configuration should apply the following hotfix: http://support.citrix.com/article/ctx134749 Acknowledgements Citrix thanks James Forshaw of Context IS (www.contextis.com) for working with us to protect Citrix customers. 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 http://www.citrix.com/site/ss/supportContacts.asp. 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 secure@citrix.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: XenServer 5.0 XenServer 5.0 Update 3 XenServer 5.6 XenServer 5.6 FP 1 XenServer 5.6 SP 2 XenServer 6.0 XenServer 6.0.2 ====================================================================== ========================================================= Serveur de référence du CERT-Renater https://services.renater.fr/ssi/ ========================================================= + CERT-RENATER | tel : 01-53-94-20-44 + + 23 - 25 Rue Daviel | fax : 01-53-94-20-41 + + 75013 Paris | email: certsvp@renater.fr + =========================================================