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Category:   Device (Encryption/VPN)  >   Citrix NetScaler Vendors:   Citrix
(Citrix Issues Fix for Citrix NetScaler Service Delivery Appliance) Xen PCI MSI-X Interrupt Management Logging Bug Lets Local Guest Users Deny Service
SecurityTracker Alert ID:  1036518
SecurityTracker URL:  http://securitytracker.com/id/1036518
CVE Reference:   CVE-2015-4105   (Links to External Site)
Date:  Aug 3 2016
Impact:   Denial of service via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 10.1.x prior to version 10.1 Build 133.9; 10.5.x prior to versions 10.5 Build 58.11 and 10.5 Build 57.7005.e
Description:   A vulnerability was reported in Xen. A local user on the guest system can cause denial of service conditions on the target host system. Citrix NetScaler Service Delivery Appliance is affected.

A local user on a guest system can invoke certain operations to cause the PCI MXI-X interrupt management logging code to fill up the host disk.

x86 systems are affected. ARM systems are not affected.

HVM guests with their device model run in Dom0 and with access granted to physical MSI-X capable PCI devices can trigger this flaw.

Jan Beulich of SUSE reported this vulnerability.

Impact:   A local user on the guest system can cause the host to consume excessive disk space.
Solution:   Citrix has issued a fix for CVE-2015-4105 for Citrix NetScaler Service Delivery Appliance (10.1 Build 133.9, 10.5 Build 58.11, 10.5.e Build 57.7005.e).

Version 11.0 is not affected.

The Citrix advisory is available at:

http://support.citrix.com/article/CTX206006

Vendor URL:  support.citrix.com/article/CTX206006 (Links to External Site)
Cause:   Resource error

Message History:   This archive entry is a follow-up to the message listed below.
Jun 3 2015 Xen PCI MSI-X Interrupt Management Logging Bug Lets Local Guest Users Deny Service



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