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Category:   Application (Generic)  >   Xen Vendors:   Xen Project
Xen Missing Interrupt Check Lets Local Users on a Guest System Cause Denial of Service Conditions on the Host System
SecurityTracker Alert ID:  1038733
SecurityTracker URL:  http://securitytracker.com/id/1038733
CVE Reference:   CVE-2017-10919   (Links to External Site)
Updated:  Jul 7 2017
Original Entry Date:  Jun 21 2017
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 4.5.x, 4.6.x, 4.7.x, 4.8.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 user on the guest system can send a software generated interrupt to a vCPU or can configure timers to trigger a missing check and cause the host system to crash.

ARM systems are affected.

x86 systems are not affected.

Julien Grall of ARM reported this vulnerability.

Impact:   A local user on the guest system can cause the host system to crash.
Solution:   The vendor has issued a fix (xsa223.patch).

The vendor advisory is available at:

https://xenbits.xen.org/xsa/advisory-223.html

Vendor URL:  xenbits.xen.org/xsa/advisory-223.html (Links to External Site)
Cause:   State error
Underlying OS:  Linux (Any)

Message History:   None.


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