SecurityTracker.com
    Home    |    View Topics    |    Search    |    Contact Us    |   

SecurityTracker
Archives


 


Category:   Device (Encryption/VPN)  >   Citrix NetScaler Vendors:   Citrix
(Citrix Issues Fix for Citrix NetScaler Service Delivery Appliance) Xen GNTTABOP_swap_grant_ref() Missing Version Check Lets Local Guest Users Deny Service on the Host System
SecurityTracker Alert ID:  1036520
SecurityTracker URL:  http://securitytracker.com/id/1036520
CVE Reference:   CVE-2015-4163   (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.

The GNTTABOP_swap_grant_ref() call does not properly check the version of grant table operations. A local user on a guest system can exploit this flaw to trigger a null pointer dereference and cause denial of service conditions on the target host system.

Jan Beulich of SUSE reported this vulnerability.

Impact:   A local user on the guest system can cause denial of service conditions on the target host system.
Solution:   Citrix has issued a fix for CVE-2015-4163 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:   Access control error

Message History:   This archive entry is a follow-up to the message listed below.
Jun 12 2015 Xen GNTTABOP_swap_grant_ref() Missing Version Check Lets Local Guest Users Deny Service on the Host System



 Source Message Contents



[Original Message Not Available for Viewing]


Go to the Top of This SecurityTracker Archive Page





Home   |    View Topics   |    Search   |    Contact Us

This web site uses cookies for web analytics. Learn More

Copyright 2021, SecurityGlobal.net LLC