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Category:   Application (Generic)  >   Citrix XenServer Vendors:   Citrix
(Citrix Issues Fix for XenServer) Xen MMIO Emulation Flaw Lets Local Guest Users Deny Service on the Guest Operating System
SecurityTracker Alert ID:  1027494
SecurityTracker URL:  http://securitytracker.com/id/1027494
CVE Reference:   CVE-2012-3432   (Links to External Site)
Date:  Sep 6 2012
Impact:   Denial of service via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 6.0.2 and prior versions
Description:   A vulnerability was reported in Xen. A local user on the guest operating system can cause denial of service conditions on the guest system. Citrix XenServer is affected.

A local user on the guest operating system can run code that has privileges to access MMIO regions can trigger a flaw in MMIO emulation to cause the guest operating system to crash.

All versions that support HVM guests are affected.

Impact:   A local user on the guest operating system can cause denial of service conditions on the target guest operating system.
Solution:   Citrix has issued a fix for Citrix XenServer.

The Citrix advisory is available at:

http://support.citrix.com/article/CTX134708

Cause:   State error

Message History:   This archive entry is a follow-up to the message listed below.
Jul 26 2012 Xen MMIO Emulation Flaw Lets Local Guest Users Deny Service on the Guest Operating System



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