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Category:   Application (Generic)  >   Xen Vendors:   Xen Project
Xen HVMOP_set_mem_access Input Validation Flaw Lets Local Guest Users Deny Service on the Host System
SecurityTracker Alert ID:  1029956
SecurityTracker URL:  http://securitytracker.com/id/1029956
CVE Reference:   CVE-2014-2599   (Links to External Site)
Date:  Mar 25 2014
Impact:   Denial of service via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 4.1 and later
Description:   A vulnerability was reported in Xen. A local user on the guest operating system can cause denial of service conditions on the host operating system.

The HVMOP_set_mem_access HVM control operations does not properly validate input size. A local administrative user on an HVM guest operating system can consume excessive CPU resources on the host operating system.

On version 4.2, only 64-bit versions of the hypervisor are affected.

Device model emulators (qemu-dm) are affected.

Jan Beulich reported this vulnerability.

Impact:   A local administrative user on the guest operating system can cause denial of service conditions on the host operating system.
Solution:   The vendor has issued a fix (xsa89.patch, xsa89-4.1.patch).
Vendor URL:  www.xen.org/ (Links to External Site)
Cause:   Input validation error, State error
Underlying OS:  Linux (Any)

Message History:   None.


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