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Category:   Application (Generic)  >   Citrix XenServer Vendors:   Citrix
(Citrix Issues Fix for Citrix XenServer) Xen Grant Copy Race Condition Lets Local Administrative Users on a Guest System Cause the Host System to Crash
SecurityTracker Alert ID:  1039700
SecurityTracker URL:  http://securitytracker.com/id/1039700
CVE Reference:   CVE-2017-15597   (Links to External Site)
Date:  Oct 31 2017
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 6.5, 7.0, 7.1, 7.2, 7.11
Description:   A vulnerability was reported in Xen. A local administrative user on the guest system can cause denial of service conditions on the host system. Citrix XenServer is affected.

A local administrative user on the guest system can trigger a race condition in certain grant copy operations to cause a memory corruption error in the hypervisor.

x86 and ARM systems are affected.

x86 PV and HVM guests are affected.

Pawel Wieczorkiewicz of Amazon reported this vulnerability.

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

For 7.2: CTX229067

For 7.1 LTSR CU1: CTX229066

For 7.1 LTSR: CTX229065

For 7.0: CTX229064

For 6.5 SP1: CTX229063

The Citrix advisory is available at:

https://support.citrix.com/article/CTX229057

Vendor URL:  support.citrix.com/article/CTX229057 (Links to External Site)
Cause:   Access control error, State error

Message History:   This archive entry is a follow-up to the message listed below.
Oct 25 2017 Xen Grant Copy Race Condition Lets Local Administrative Users on a Guest System Cause the Host System to Crash



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