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Category:   Application (Generic)  >   Xen Vendors:   Xen Project
Xen Lets Local Users on a Guest System Cause Denial of Service Conditions on the Host System
SecurityTracker Alert ID:  1036753
SecurityTracker URL:  http://securitytracker.com/id/1036753
CVE Reference:   CVE-2016-7094   (Links to External Site)
Date:  Sep 9 2016
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 4.4.x, 4.5.x, 4.6.x, 4.7.x
Description:   A vulnerability was reported in Xen. A local user on the guest system can cause denial of service conditions on the host system.

A local administrative user on the HVM guest system can trigger a flaw in the allocation of state information and cause denial of service conditions on the host system.

x86-based systems that are configured for shadow paging are affected.

Andrew Cooper of Citrix reported this vulnerability.

Impact:   A local administrative user on the guest system can cause denial of service conditions on the host system.
Solution:   The vendor has issued a fix.

The vendor advisory is available at:

http://xenbits.xen.org/xsa/advisory-187.html

Vendor URL:  xenbits.xen.org/xsa/advisory-187.html (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Sep 15 2016 (Citrix Issues Fix for Citrix XenServer) Xen Lets Local Users on a Guest System Cause Denial of Service Conditions on the Host System
Citrix has issued a fix for Citrix XenServer.



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