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Category:   Application (Generic)  >   Xen Vendors:   Xen Project
Xen HVM/PVH Null Pointer Dereference Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1042021
SecurityTracker URL:
CVE Reference:   CVE-2018-18883   (Links to External Site)
Date:  Nov 2 2018
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in Xen. A remote user can cause arbitrary code to be executed on the target user's system.

A user running HVM guests can create specially crafted content that may execute arbitrary virtualization instructions on the target user's system. This may cause a null pointer deference and denial of service on the host system.

Systems running Xen 4.9 and later are affected.

Intel x86 systems are affected.

x86 HVM and PVH guests can exploit this vulnerability.

Sergey Dyasli of Citrix reported this vulnerability.

Impact:   A remote user can create content that will execute arbitrary code on the target user's system.
Solution:   The vendor has issued a fix.

The vendor advisory is available at:

Vendor URL: (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Nov 2 2018 (Citrix Issues Fix for Citrix XenServer) Xen HVM/PVH Null Pointer Dereference Lets Remote Users Execute Arbitrary Code
Citrix has issued a fix for Citrix XenServer.

 Source Message Contents

[Original Message Not Available for Viewing]

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